Hmmm, well I get where you're coming from but I'm not sure how you get at having an original thought all the time. A vanishingly small number of people who have ever lived have managed to have an original thought. Most improvisors, when they are playing convincingly, are playing things they practiced previously. When I listen to the great improvisors like Coltrane, Pat Metheny, Pattitucci and the rest, a lot of times, I can hear the patterns they are playing because I'm learning the same ones. The way they can weave in and out of those patterns and be conversational is where the genius lies.
I'm not a huge fan of using quotes either, but lots of great players did it, so I can't see that as terrible. But jazz is about saying what you want, so there is that. But I do strongly feel that when it does come to playing jazz, copying and figuring out how to sound like someone else is crucial. But even as you do that, it's never going to be exact and that is where you learn to get your own sound.
Just my opinion, but when I hear people play who think they are blazing their own trail without putting in time studying at least a few other people very intently, their playing just sounds like gibberish. It's like they are trying to invent a completely different language that only they understand.