One thing I've noticed is that I generally benefit more by approaching certain particular aspects by themselves for periods of time.
For instance, if I decide I could use some work on JB/EJ style fast articulate runs, then I do better by pretty much devoting all or most of my practicing to that concept for at least a few weeks focusing on: 1) what are the notes 2) how are said notes syncopated...and 3) what does my picking technique need to look like to play those fast runs cleanly with the appropriate syncopations
Where I tend to mess myself up is when I get going for a short period of time on something, like say the above JB/EJ fast run technique example, and then all the sudden Ill get ADD and out of nowhere Im working on Robben Ford type phrasing. Very different syncopation and feel to the hands. Quite different, jazzier type approach to note choice as well. The problem is, I wont realize at first that ive done any harm. I'll seamlessly and mindlessly switch my focus over to the RF stuff and maybe I might even be doing a good job with it. I might be thinking, "hey, im sounding pretty good at this", but then I'll get to my next gig and I notice myself getting tangled up when I try some JB/EJ stuff. My syncopation will be too open/free, my tendency to use that particular hammer/pull thing RF does will be messing with my attempts at fast cleanly picked runs, and my note choice will be tending to a more jazzy free approach as opposed to more straight pentatonic ideas that work better for big fast runs.
What works better for me is to practice the example JB/EJ technique hard and consistently until I start to see majorly diminishing returns in my ability to make the things I practice second nature. All the while, Ill purposely focus on that style playing at my gigs and listen primarily to that style playing.
After I reach that point where Im not making big gains any longer, Ill switch to a different concept. Ill also switch the music I listen to to highlight whatever concept I have switched to. Ill practice hard and focus mostly on whatever the next concept/technique is at my gigs. Then so on. Its just a few main concepts I really focus hard on. When I exhaust one i move on the next one and keep going back around. Ideally by the time I get back to a technique I previously completely exhausted, my mind and fingers will be ready again to pick up and continue
For me its more a matter of how notes are syncopated from one style to the next than the different scales/note choices. Im always trying to improve my ability to comfortably phrase lines with equal comfort regardless of the rhythm and timing and regardless of the picking pattern that will result from a given phrase. (As opposed to generally defaulting to very physically comfortably syncopated phrases that lend themselves to very comfortable picking patterns)
So If I can pick a style or concept and stay with it for the long haul with out getting side tracked, I will get the most out of that period of practicing.
The idea is to continually get more and more limber at all the types of playing I work on so that I can ultimately move in and out of any style without of missing a beat....no pun intended
Just an observation I made about my practice time