I've been banging both of those drums (not that way) for a while now.
I think Channing would be an excellent fit alongside Robinson (playing post D & D-rebounding while Robinson gets out on the break; playing stretch O and getting back to set up defense while Robinson seeks out offensive boards like a maniac); and can stretch the floor while Aldridge or Rolo works down low. If we could rest up Aldridge at 32 mpg next year over the course of the season, Rolo could grab 28, Channing 20, and Robinson 16. Of course you'd still want a real big as insurance in case Rolo went down b/c Channing's no full time 5, maybe Turiaf seeks a chance at a title with us.
Greivis is exactly what our backcourt needs for Dame's sake (rest and playing off ball a little) and if we ever want to develop CJ & Robinson. A tall real-PG, who defends 2's, can feed the post, and it's a bonus if he's a decent shooter. Hell I'd even be fine with old man Miller holding down the fort for 15 mpg, but Greivis for 24 (12 with Dame, 12 with CJ) would be great, with Wes sliding over to 3 to back up Nic. He'd have the Eric Maynor effect x 10 and give our bigs a lot more easy buckets.
I'm not sure if/how we could get both, but I think we'd be a strong championship contender (not saying we wouldn't be now with development next year). Not a ton of D, but enough w/Matthews, Batum, and improvement from Lillard.
Lillard (32)/CJ (16)
Matthews (24)/Vasquez (24)
Batum (36)/Matthews (12)
Aldridge (32)/Robinson (16)
Lopez (28)/Frye (20)