I'd gladly be a mentor, but IC, this would require dropping my ambassador subclass, and I don't want to do that!
I feel you, same here. At least it's not your whole class anymore, but I still see little incentive to pick the subclass, when I can be ambassador instead.
There as also this thing about mentors "taking a step back from active duty". I'm not sure if my fear of the subclass is a relic of the old system, but with that I'd rather pick no subclass at all than that one, for the amount of newbies I cross, just to make sure I am not limited in my recruitment and stuff.