For a late night lineup I'd like to see some "Gintama" or "Fairy Tail" on the line, although I guess it would be difficult for some of the jokes to cross over in the dub though. sad
I'd also vote for them to put on the new version of the "Hunter x Hunter" anime, it seems to reflect the manga's violent scenes a little bit more closely then the older version, I think it would fit well into the late night lineup.