If it's uncut, I'll give Rave Master a try. If it's the edited one I won't, because I gave it a chance a few years ago on Toonami and it really didn't work for me at all.
I'm pretty confident Gundam 00 will be back. My earlier speculation notwithstanding, it was overly optimistic to think that they'd be dubbing it so fast that they could just air the second season at two episodes a week without interruption at this point.
I'm fine with Gurren Lagann coming back and then having another show or two get some time, after which 00 returns. There are really quite a few interesting possibilities for Ani-Mondays that I'd like to see get on the air. I'm glad significant titles like Gundam and GL have a home there, but I also like how the block gets relatively obscure titles on the air. Sometimes that gets us questionable things like MD Geist, Tokko, and Street Fighter Alpha Generations, but it also gets us Macross Plus and the Street Fighter II movie and Now and Then, Here and There. I'd really like to see them continue that while also making a little room for some really solid SF shows, one of which would certainly be Ergo Proxy.