green depot
This is a very conflicting system that I would hate. First, left hand's exp bonus is relatively garbage compared to the exp given by efficiency. Second, due to Maestro's damage scaling by their minimum skill level, this would mean constantly having to skill on all 9 other characters to keep up as Mman spends almost forever skilling.
I don't see any benefit to this change, just pain.
rose marsh
The goal for maestro is to be always the best in all of skills that is kinda his character identity. While your changes might have some reasoning gameplay wise it would be out of character.
Also you actually don't really need skillers because of your 3d printer getting the resources
void bronze
with vman you can now benefit from both left & right hand making it level even easier than before, specially since the talent says vman himself get double benefit from those
fluid gyro
.