I don't quite like the idea that i should stack hybrid stat for mitigation. When i see weapon skill on Archmage items (alot of them), i think 'ok, parry may be nice but armor penetration and hit is worthless for me, so i'm essentially wasting a significant part of that stat'. Same for melee, give them disrupt and magic resistances (with focus on spirit and corporeal for order), not willpower.
But generally yes i agree that ppl should pay more attention to their own means for survival.