Was DOAX2 so horrible from a gameplay standpoint? I played DOAXBV on XBox and enjoyed it, but passed on DOAX2. I hear nothing good about it from a gameplay perspective. I hear it was basically a lesbian dating sim (a bit extreme sounding imo). I honestly can't be much more excited than I am already for DOA5 so I may be a little biased in my lack of excitement on any new reveal.
For me it's not really bad, but with the exception of the graphics it's definitely a step back in comparison to its predecessor: the idea to add new activities was good, but they are implemented bad in the game (with the exception of the marine race they are too short and often hard, with the impossibility to train for them); the collections of the girls are oriented too much toward the "sexy factor", at the expense of a major variety for them like in the the previous title (anyway the idea to create some swimsuits inspired to the main costumes of the girls in the official series is good); and overall the impossibility to play offline with friends and to choose the swimsuit for the characters in the online mode is surely the thing more bad.
Anyway about the volleyball game I must say that in DOAX2 the camera is more stable following the ball from a side to the other of the court, when in the first game I must say that gives me headache with the time for its drastic movements. The (slightly) major interaction between the girls with the "be friend" video and the care for the differents comments of every girl toward a specific object (in according with their personality or backstory) are nice, but effectively is too little.
Returning on the topic, I remember that Team Ninja was considering the idea to create a port of Doa5 also on Wii U (in this case we can be sure that Samus will make its entry in the DOA Tournament

) but sincerely now seems to early for me.