Maybe. For me, prog may learn a lot more from classical music than it does now. More subtleties, more complexity. More uncompromising music as well. More bands that would have the same sense of adventure as Beethoven, Bartok, Mahler, Debussy, Ravel, Stravinsky, to name but a few.
But on the other hand: prog has more climaxes than most classical music. And I like the idea that both acoustic and electric instruments are used in prog. And listening to bands like Yes and ELP in the early '70's, you get the impression that ANYTHING is possible in the music.
Innovation: okay, from the beginning of prog in the '60's until now a lot has happened, especially between '69 and '75. But the innovation in prog nowadays is not very hopeful.
I hope there will be a prog-renaissance.