Hello again mates;
What do you think of adding active abilities somewhere to shaman/warrior/pally that give 100% block chance for a short duration? Without being able to attack or move of course, i think it would give an extra layer of skill expression if you can time it right against big attacks.
The same could apply to other classes, I.E. Rouge gets 100% dodge for 1 sec at 50 energy of something similar. Not something you can spam but can be useful if timed right.