Ok after seeing all the outfits slowly gonna sort my impressions. This is just my personal perspective and is not mean to offend the artists. Not gonna bother using arbitrary scores.
Thumbs up = Doesn't even have to be amazing to get this it just has to avoid being bad. That doesn't mean I would buy it, but I can see it being buyable.
Thumbs down = A big nope that I likely wouldn't even DL even if it was cheap or even free.
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Nyotengu = Thumbs up. Not the most unique outfit since it's a witch, but it's fitting for the character in question so it works. The pumpkin wand design feels off and clashes though.
Marie Rose = Thumbs up. Marie Rose can make nearly any cute outfit work for her and this outfit is no exception. Alice design fits her easy.
Leifang = Thumbs down. Let me make this clear I didn't thumbs down because the outfit is slutty. There are a few slutty outfits I like. This one just doesn't really fit for Leifang plain and simple. Not to mention shoehorning pumpkin faces with something that I guess was supposed to be a horned ogre felt off.
Helena = Thumbs up. She just wears a white dress. That pretty much works for Helena. Not that creative, but still works.
Momiji = Thumbs down. Is that supposed to be a witch because of the broom? Putting that aside the whole outfit looks way too busy for her with the scarf/fishnet. No idea what that was aiming for. Being color coordinated isn't enough.
Alpha 152 = Thumbs up. Honesty this less has to do with it being a good outfit [it's really not since it's literally glue on wings + horn= profit], but it still is the most elaborate outfit 152 has as sad as this sounds. It got thumbs up for effort/improvement.
Lisa = Thumbs up. It fits the character + keeps the halloween theme going.
Tina = Thumbs up. She can pull off a mermaid look. Only thing that puts me off is the footwear choice.
Bass = Thumbs up. As much as pirate is REALLY OVERDONE it at least fits Bass [at least it was a captain type] to an extent similar to Brad that went with drunk pirate angle. It didn't feel randomly tacked on like it was for Eliot or Ein. I mean at least Eliot had outfit synergy with Brad going for him. Ein didn't fit his pirate at all. Pirate itself isn't good or bad regardless how much it is used, but it matters on who the character is and if the outfit is adjusted to tailor that respective character.
Genfu = Thumbs up. Looks like a wizard type outfit that fits him. Very good it went for the more subtle middle ages type darker colors rather then the elaborate bright colors.
Eliot = Thumbs up. Musketeer can work with Eliot. Simple yet still has that charismatic effect that fits Eliot.
Hayabusa = Thumbs down. Going for a werewolf look because of the ears? Outfit itself also looks bad when you try to combine the aristocrat [that doesn't fit Hayabusa] clothes with mask/scarf.
Hayate = Thumbs down. A sheep/ram thing? Ignoring the whole face area the outfit had potential, but it just didn't really mesh well. The footwear with the yellow also clashes.
Ayane = Thumbs up. She can pull off most hood outfits and this one is no different. Rest of outfit compliments each other so yet another good Ayane outfit for her wardrobe.
Jann Lee = Thumbs down. Just didn't really make me feel anything. Headpiece could have been ditched. The clashing leopard print didn't help either. At least it's not another goofy dragon straight out of Barney.
Rig = Thumbs up. He can pull off a better werewolf type outfit and it helps that adds to the hood/has rips fitting the immersion. Yes it's fanservice clearly, but it's much more subtle compared to Ein crap.
Rachel = Thumbs up. Yes yet another pirate one, but like Bass/Brad she can pull off a pirate queen angle. Not the most unique but whatever at least it works which can't be said for other characters.
Mila = Thumbs down. Just because it's halloween doesn't mean the outfit has to be tacky as fuck. Yes Mila has a bee theme, but there are more creative ways to interpret that then just wearing a blatant bumblebee outfit. That is like how Jann Lee has a dragon theme yet instead of figuring a way to interpret that in a creative way he just wore a goofy dragon outfit like he is one of those amusement park mascots. You don't see Rig wearing a wolf mask, fur, and tail. At most it has the ears because artist knows the importance of a subtle yet good aesthetic.
Akira = Thumbs down. Clashing Leopard print killed it along with white gloves + necklace. Doesn't scream what Akira would wear.
Jacky = Thumbs up. I don't know what that was going for think a rock star, but it still works for a character like Jacky that works with urban apparel. Sunglasses/headband seems to work too without being stuffy. Honestly annoyed that Jacky keeps getting the outfits that would easily fit with Ein.
Sarah = Thumbs up. Not sure what that angle is but it works enough for Sarah. Subtle but still has impact.
Pai = Thumbs down. That bright yellow does not work with Pai at all. Not even gonna comment on rest of outfit because yellow just kills it.
Leon = Thumbs up. Can pull off the tough looking exterminator/slasher horror icon outfit great thanks to physique. Be nice if a certain other fighter I would later mention went with a similar angle.
Christie = Thumbs up. Like Helena's outfit it's a simple type dress that goes for ice queen angle but it still works especially since it goes with her hair/personality. Not the most creative, but honestly just being reliable alone puts the outfit above several in this contest.
Zack = Thumbs up. Zack has wacky ass costumes and this is no different. This one has the bonus of giving hair [not sure if removable wig], subtle urban apparel that goes with the mad scientist look, and avoids it being cringe like his circus outfit.
Raidou = Thumbs down. This one is a big shame. It looked like an amazing premise, but the cyborg parts literally kills the ancient ascended warrior angle it was going for. Was it so much to ask just to remove the robot parts for this outfit?
Ein = Thumbs down. Honestly since I am pressed for time I did this ranking on two categories and a "thumbs down" is an understatement and an insult to the others in that category. The caveman outfit looks plain as fuck with objectively little work involved. Like less work then swimsuits. It's as bad as the Speedo Jann Lee outfit although at least that outfit was associated with MMA and he had gloves I think to make it work. It's not even the concept that is bad [although personally don't think he fits a stereotypical caveman at all if anything Leon or Bayman would pull it off better thanks to larger physique] it's the execution. I mean really just something for his groin area and make a knife prop then call it a day? What stings more is there were objectively better designs although those probably got canned because it was not Halloween themed which makes me wish they just made the contest outfits in general and NOT under a Halloween gimmick [that you would wear at most one month a year] for more creative flexibility.
Hitomi= Thumbs up. Honestly I wish I bothered with more categories. Only reason this passed into thumbs up is because it fits her and it wasn't as cringe with her bear theme as Mila was for her bee theme. The lower body portion is what really saved it. At least she didn't wear a teddy bear goofy outfit. Again I don't take points off for it maybe being slutty by default there are other factors involved.
Kokoro = Thumbs up. She can pull off a wood fairy. Those flowers being translated into the game makes me cringe, but that is more of a TN transition issue then the artist.
Phase 4 = Thumbs up. The 'dark' Kasumi can pull off a dark elf aesthetic so yeah it works.
Kasumi = Thumbs up. The 'good' Kasumi has a more normal elf with royalty which fits Kasumi + bonus for synergy with Phase 4 outfit.
Brad = Thumbs up. Mad Hatter fits him.
Honoka = Thumbs down. Not so much Honoka. It's cute, but it barely fell down the threshold for me.