I've been lurking here from time to time since the last time I posted and I have to say man, you're surprising me. I'd normally be very nervous about a fan project for any of my favorite games, especially if it's something like an animation or movie like this, but so far I'm honestly impressed. It's just the character designs so far really, but they've turned out really great, and you continue to put out more content on a regular basis too. From my perspective, I think you've clearly got a good and very compentent "look" down for the project, my only concern now is for how the story and script would be.
This Tina fan gives your Tina design a firm thumps up (looking forward to Lisa now). Just promise me that if you get as far as being able to get voice overs for your characters, please find someone that sounds more like the Japanese Tina. I don't care about the southern accent (I never thought she had to have one, I mean even her dad doesn't.... so, huh?), that depends on how you see Tina's background, but even if she is supposed to have a southern accent, her official English voice actress only covers her rough/rowdy side but doesn't do her sultry side any justice... it's very possible to sound sultry with a southern accent (i.e. Elizabeth Taylor or Rogue from X-Men The Animated Series).