I cant seem to login on the EA forums, ill post over there, I just want to get my thoughts out now that I am thinking about it.
Achievements
I would like to see some more gameplay ones, like crossing someone up so that they fall, dunk on a center, hell, dunk on a point guard would be a funny one to see. Less NBA Academy achievements. Fundemental: Score 5 bank shots in a row or something. I like what we have already and in the past years, just less Academy and more gameplay ones would be cool.
Dunk Contest
Update to the latest rules with attempts and such.
Use a teammate for passing, dunking over, ect
Have an old school dunk contest rules mode where you put down as many dunks as possible in 30 seconds or whatever the rules were
Props to wear/jump over
Get rid of the cartwheels and jumbotron unrealistic stuff. Dunk contests can be exciting without that.
For new animations, look at teamflightbrothers stuff on youtube.
keep the same mechanic with the take off, spin, in air stuff, but make it blend better
add the dwight "double" alleyoop dunk, stuff from behind the basket using the back of the backboard
allow any trick dunk to be performed on a toss, with a teammate and normally
Bonus: Add HORSE mode using the dunk contest toss animations plus shots in the academy (behind backboard, long range, in crowd, go nuts)
i.e.
http://www.easportsworld.com/en_US/video/3564970