Your techt tree is good, so i wont -1 it, but try to imagine blasters in middleages -_-. also its design dont fit as you can see to the bacic dRR's tree. my tree is very good fitting to the tree, and it not include blasters, look at main page of dRR's game. its M E D I E V A L
I think, It's a way to advanced. Modern tech will be OP. If you want, I can add more advanced techs later, but not now.
doc's nationwide is not that modern, it's medival ages not modern ages.