Originally Posted by
Tex_Mex
1) Fluff damage mitigated by armor - If the class is going to be able to effectively tank in lighter style armor, it is going to need a mechanic (like a stance) that drastically boosts its armor class, so that it can survive the fluff damage from trash packs, adds, and such.
2) Tank busters mitigated with skills - The easiest to implement by far. Just need geomancer skills like Stoneskin etc.
3) A requirement to keep enemies as still as possible - Here is where things get tough. This requirement means the class basically cannot be ranged. If it uses magic, the magic needs to have no cast time and be melee ranged, or it needs to be magically buffing weapons or weaponskills.