I have a suggestion about tanking mechanic.
Most of other MMORPG such as WoW adapt threat-based tanking mechanic. A tank uses skills to gain mobs thread to keep aggroes.
How do you think tanking skill is based on sacrifice or intercepting damages which might come to other allies?
Pulling and peeling skill may also be good.
Most pros of this mechanic is applied not only for PvE, but also for PvP.
This can be used against players who don’t have threat concept.
I imagine if tanks joins GvG arena as decent roll other than healers, DPSes, very exciting!
Though I know GW2 has concept about rolls not tank, heal, dps, but dps, support, control…