60/60 - ch/r gets a skill that makes the entire party vanish for 5 seconds. Haven't tried it in combat, but the description doesn't say anything about not working in combat.
Downsides: 1) champion must be in shield form; 2) champion is stunned for 12 seconds; 3) consumes 50% champion hp; 4) champion does NOT go invisible.
60/60 - r/ch gets a passive skill that reduces CD on all mechanism skills whenever a mechanism is used. It looks like the r/ch was intended to be a utility pvp player, but with rage-based elites I'm not sure how well that would work out....
I'll post the 70/70 when my secondary gets high enough to do the quest.