I think having multiple 100 craft skills is fine. I think synergy is fine as it is. The evolith system is somewhat broken unless you allow an opportunity to upgrade the base armor to higher levels. Even then, the "vs Mob Type" evoliths are kind of pointless, mainly because we do not have the inventory space needed to carry around such armor. My BLU is always 76+/80 with a minimum amount of gear.

Would be nice if you made evoliths like automaton attachments that you can attach to a piece of gear whenever you wish. That way, you could carry them around in your satchel/sack instead.