Caught myself thinking about what I would want from a future DOA6 these past few days... The fighting is deep and good, it is competitive although no one seems to want to acknowledge it. I love it, and wouldn't change a thing. It is great that DOA has been getting more recognition lately in the FGC and hope it continues...
BUT. I would really like if they could expand on the game from a casual standpoint. This has been mentioned a couple of times before, but I would really love it if DOA6 incorporated some mini-games into the whole thing. DOAX and etc put a major stain in the series and I would really hate to see another one, but I would love a few resort inspired mini-games available on the main game. Clearing story could unlock a "resort mode" or whatever, where ALL characters can play a few rounds of volleyball or jet ski or whatever. It doesn't need to be much, just, you know, fun mini games to pass the time. This could also be a good opportunity for some side character development as well... Characters chatting each other up during rounds of pool, for example, could be very amusing. Probably goes against all kind of rivalries and canon, and seeing Rig casually chat with Kasumi (or Leon having chats with Tengu over some beers) would probably be extremely weird, but maybe it would be worth it if the conversation is entertaining.
Meh. Just dreaming on. I never played the DOAX titles, so I don't know about the quality of the actual gameplay on these activities, but if they could pull off a fun mechanic, I would really like to see it implemented.