Although it would seem that everything that can be done in this area already has been done and better than anyone else could. Yet great players continue to mine this fertile area. Again, the best players take a compositional attitude. I have a friend that's a brilliant improviser and composer of more than just jazz but claims he completely missed the bebop repertoire. Although I feel he is probably exagerrating, when he improvises in this area it comes off as fresh as a daisy because he is far less cliched than many beboppers and brings a compositional mindset to the party.
Music is truly an open sky.
You are limited only by your imagination and the ability to carry out the musical things you envision. As you study the many forms and styles of all music, your personal growth will bring forth an accelerated sense of substance and allow you to approach all forms of improvisation with an open mind. There is no substitution for solid musical thought and thorough study of all music. It is necessary to have the necessary technique to play great musical ideas, but it is dangerous to let the fingers do the walking. What gets sacrificed in that situation is inevitably the music itself.