Preliminary conclusion
After a few months of fiddling around with the center, exchanges, piece activity, restriction, pivot points and invasion, I come to the preliminary conclusion that it will be possible to incorporate these positional ideas into my framework. Meaning, that it make sense to continue with the subjects I was already studying (like endgames) without the risk that I will grind to a hold once I finish them. So I will work the next two years on: further extension of the positional framework (system 2) tactics (system 1). This is the glue between positional ideas endgames (system 2 and system 1) I think that it is a realistic expectation that this will bring me from 1700 to 2000 in about two to four years. If I manage to do so, I consider my case of adult improvement proven beyond doubt. I can't predict what will happen after that for two reasons: I don't know which unexpected discoveries I will make the next years. Be it good or bad. Furthermore, I will get older, and I don't know ...