What we really need is a radically re-designed target.
I'm thinking of a hoop, like a croquet wicket but taller, that a disc can only pass through vertically. Then people will have to roll discs through it, instead of flying them, giving us 2 distinct styles of projecting discs, the way golf does. This will encourage designers to smooth out those rough greens.
It goes without saying that it will also eliminate targets up on poles, and unless designers and TDs are really sadistic, targets on mounds as well. Everyone will surely cheer.
I'm sure as time goes by, putters will be re-designed for better balance and easier rolling. But that may not go far enough, and sooner or later some non-designer, non-TD geniuses will solve that problem, too -- make the disc spherical, so it rolls more consistently.
At which point we'll be rolling balls on smooth, nearly-level greens, and have achieved the perfection we've all been longing for.