What disc golf needs is money and changed expectations IMO. I would like to see more private courses and the expectation, and acceptance, from players that they will have to pay something to play a nice course. My thought is that such a change would lead to more high quality, private courses.
It would also be nice to see a tournament fee and payout structure that made it more profitable to hold tournaments. Now, many participate in tournaments, not to win, but simply with the expectation that they will come away with their entry fee's worth of merchandise even if they come in dead last.