Well I would hope they almost completely redo the BandLab collaboration site. If they want to bring people together in the music-making process, what they have now is amateur at best. I could make a wish list to that end, but I doubt it would be worth writing since decision-makers at companies are seldom visionaries with practical management experience.
But so that you don't itch, here's a couple of important items:
1) Integration of Cakewalk by Bandlab into the website. Thus, a professional DAW for use by the "band" rather than what they have presently.
2) Either a full-time active moderator team with power to re-assign the proper music classification to what people upload (and actively doing so), or some type of voting system by everybody that would achieve the same result. Perhaps even "punish" offenders who call their music "rock" when it is not. Essentially, people just want truth.