I wouldn't mind seeing stage DLC. Obviously I wanted more of those, but outside of stages:
Local Online Tag - That would be perfect for me and boo. Also the tag mode is ridiculous over the top fun. I remember when people were thinking of making that the standard for tournament play... lol I still don't get why people shit on it. It's so much fun. Some of the coolest tag throw animations I have ever seen.
More stages in Tag - A request that is simple enough. Tag is already insane, who cares what other rules it breaks?
A Completely Revitalized Online - A differently composed menu. A tournament mode. Local Online Tag. Better Netcode.
Different menu completely. It's kind of uninspired and ugly. At least DOA4's gave you good camera shots of the beauty. The whole thing needs to be redone.
Striding into impossible territory:
Story Campaign... big selectable story chunks for each new character since Ultimate. So can now choose: NEW, CONTINUE, EIN, LEON, RACHEL, MOMIJI, MARIE ROSE, PHASE 4, NYO-TENGU, RAIDOU, HONOKA. After completing all story modes you unlock The True Tengu scroll. After playing with Hayabusa 100 times and Nyo-Tengu 100 times additional information comes onto the scroll a cut scene plays and Nyo reads the scroll and resurrects Bankotsubo from the dead. The camera shifts to wherever Genfu is... and he looks to the sky fearing evil has come again and remembers what tasteless sin he did pulling off Bankotsubo's nose.
You play his story and in chapter one he kills Marie Rose for being the first DLC character, he kills Phase 4 for being a lame clone, he then kills Nyo the one who revived him for trying to take his place. The next chapter he finds Genfu and kills him. And rightfully so. Then Tengu has a rematch with Hayabusa. Right before the last blow of the match we switch to a pre-rendered cut scene and the credits roll.
I'm a big fan of the added characters and I think they need to have stories to continue being playable in the future. I worry about not having Rachel or Nyo in the future because of stuff like this.
A DOAX mode. I liked DOAX, always have always will. I thought the game was fun, and addicting.
If DOA5 had the stage design, and value of Itagaki's DOA games, we would have a perfect 10 game. It's so close.