I haven't played in a while, but I'm always up for helping people with some runs. I've got a character that can survive pretty well in MP6-8 Inferno, and one of each of the others that can survive Inferno on way lower MP, if you want variety. I've also got someone who has made it through Hardcore Inferno (no MP, I'm not that cool).
As you've already seen, CoG seems pretty quiet Diablo-wise. But I guess you've found me in game and exploited the hell out of it already. You, what, got up to level 40 or so in half an hour with a new barb last night?
It's mostly a solo team at the moment. But I did beat my solo hardcore witch doctor record a few minutes ago in a rank 40 greater rift. Made it up to 692 on the board. I think with some luck and some more leveling, I could probably clear a 41 or even a 42.
Of course, I could do even better with an ancient Dagger of Darts, but we can ask Wolfman what he thinks about the chances of one of those dropping.