Theres for example a dmg-Buff in grahtwood, which gives you 5% more dmg for 60 Minuten. Do you man such things or just group skills?
I wouldn't blanket a spell damage/weapon damage/spell crit or weapon crit. They are all over the place on those.
You could say class skills scale with spell damage and magicka. NB abilities like killer blade and teleport strike are effected by weapon critical while siphoning abilities are spell crit based.
Fighters guild abilities currently scale with spell power and magicka but cost stamina. In pts 1.4.0 it stated that it will be spell power and stamina scaling.