I agree, that's one thing I occasionally hate about the community. Too much complaining and not enough appreciation at times. Team Ninja has supported DOA5U incredibly throughout its lifespan so far. TFC'14 being a large example. The constant complaining will just turn them off from wanting to do anything more for the game.
you're worrying about nothing, this is the usual case of people ignoring the good because it doesn't cause any drama. TN gets praised every time they do something right when they release a new character,stage, or costume they like fans generally let them know just as they get scolded for doing things the fans believe aren't good. in addition to that the DOA fanbase does not agree on everything some are happy some are not rarely do they all agree something is good or bad.