I believe nothing drastic needs to happen to the game itself. As mentioned, a Disc hitting chains is a euphoric thing to me and is an iconic sight and sound associated with our sacred game. Never, ever make it standard to remove chains, for the love of Climo.
We don't need smaller baskets so our scores look like ball golf scores. That has been covered ad nauseum in the worst thread in DGCR history. I think it's an overwhelmingly unpopular idea and for obvious reasons.
The reason ten times as many people have joined the PDGA from when I did half of the sport's existence ago just in 1998 is because it's both awesome and affordable/inclusive. I can't think of any other projectile sport that has what we have going for it and we have it in abundance. Our Discs are awesome. Our baskets are awesome. We have so many awesome courses now too. The game is tantalizing and addictive. Where we are in our sport's history right now is freaking amazing to observe! And it's happening because we're doing the right things.
If I'd change anything, I'd like to see our sport have a youth program with a size and scope on par with baseball/softball. Parents and grandparents flock to ball diamonds to watch their kids play and it's essentially been an American rite of passage to participate in these sports as a kid for over a lifetime. I see no reason why Disc Golf couldn't eventually attempt do the same. After all, we're a better game. My 5th grade son is into Disc Golf (and just fired his first sanctioned 800 rated round!!). It's way more fun to follow and watch him play this than it was to sit in a camping chair freezing our butts off in spring watching almost nothing happen on a little league baseball diamond for hours. And hours. And hours.
I can close my eyes and see it now, Disc Golf in every school across the land...