Allow us to put tags on our uploads so we can search specific images. So if you're making a team but need the Jumpman logo in a forest green. You could search "green Jumpman logo" and you'd get your pick of that option.
Also arena music is a must! I believe you're allowed 11 secs of a song before the copyright kicks in. It would be great if we could upload our own sound bytes and have them available for the public to choose them as well. I would love to hear a homer "d'oh" after a miss free throw or a turnover. Or here the Jackson 5's "abc, easy as 123" after a 3