I know Autumn Leaves is diatonic, so I could have just played one scale and stressed the root of each chord plus a few other tones - in fact this is something I'm good at already which is why the 2-5-1 improv worked. However, I wanted to visualise each chord as its own scale instead of coming from a parent scale, so that I would be prepared for more advanced non-diatonic progressions (I hope that makes sense). This proved really hard because I couldn't switch fluidly.
So:
1. Should I even be trying to visualise a diatonic progression without reference to the parent major scale or is this complexity redundant? If I should be visualising one big major scale and singling out appropriate tones, how do i handle modulations or out of key chords/notes when they crop up?
2. Does anyone have a list of good progressions to improvising over, from easy to hard -they can be things on this site or just songs or something that you found helpful to practice improvising over. At the moment I think I need to be pointed to a progression that is complex, pref. not diatonic, but which stays on each chord for a long time. It is the quick changing that seems common in jazz which makes it so hard to keep up with melodically.
3. What are the steps to being able to switch between modes fluidly? I have vague ideas of what is important - like fretboard knowledge and scale pattern knowledge, but I'm not sure what order I should approach things in and have hit a rut. Should I be learning licks for each mode - which I have shied away from, or is it possible to just learn the patterns and make your licks as you go?
Thanks!