I'm reading a book about Coltraine at the moment. In it there is mention of him being a very pentatonic player... as he moved out of bebop and into the free jazz thing. I don't know enough to realize what scales that bad boy is using. He's so far beyond my abilities right now. So to read that was an interesting insight and made me smile.
I've been a pentatonic player for years, but recently been expanding the notes I use... realizing that the use of passing tones, focusing on chordal tones and switching between major and minor within the pentatonics really helps my playing a lot.
Now, I've read Jazztele's post I have a whole new load of stuff to keep me busy! I like the leap thing too. It's been something I've tried to work on for years!
Oh, oh, oh, I can add this... Instead of playing all pentatonic minor, try playing major over some major changes. That'll throw a wrench into your thought process! When I first started doing this, it threw me out of my usual patterned playing and also it sounded like I was playing outside. I wasn't of course, but it really threw my ears for a loop and took me a while to settle in!