Genra: Hell to the nah. Was so sick of his spammy projectiles in DOAD and will hopefully never see him again.
Tengu: I voted for him. He's fun to play as and I wish he would be brought back for the sake of others who really want him. I feel like they could have put more time into the character to make him more than just a last level boss character.
Shiden: No...shouldn't have been in Dimensions either.
Kasumi-Alpha: I'm assuming you mean her DOA2/DOAD version (since you do actually play as her in 5's story mode). She was a very interesting character (an evil, child-like deranged version of the main protagonist who really wanted Hayate's D) but she doesn't need to be playable anymore. There's already Kasumi and Alpha-152 and the character herself is no longer relevant.
Nicole-458: No only because Rachel is in the game but I did enjoy playing as a halo spartan in 4.
Please, don't think bad of Genra because of some idiot spamming projectiles online, that is not the way he is supposed to be played. I'm sure that if you fought a proper genra you would think differently. Course that's pretty much only me lol.
Did you? Pretty sure I only saw you use helena, then again it has been ages since we last played.
Tengu. So much Tengu.
PS: Kasumi Alpha and Miyako can die in a fire.