so far, i don't think some of the suggestions on here would be 'adequate' for [AS].
some of the shows suggested are not [AS] material in many ways.
then there are obviously some that shouldn't be shown anyway.
i would love to have Ergo Proxy be on here. Fuse did drop it, and the anime wasn't really widely watched, so it could be like a fresh show to start. and it does have the characteristics of most [AS] shows 
i have been a supporter of Suzumiya Haruhi No Yutsuu to be on [AS]. though at times, i think it would fit in, but then at times, it might not be broad enough. it would appeal to all anime fans who would get the stereotypes and blunt refrences, but that would probably be the only viewer target to hit. sure it has a cult following (Haruhiism) and the danse has been viral, but it could backfire and soon have William's Street bombarded with a million school-uniformed rabid fans trying to burn them down (that be the semi-WCS).
Ouran i have been getting into, but it would not fit in with [AS] either. also, i think it would scare a lot of people that aren't comftorble with the yaoi elements, and all the mushy romantic stuff-i already turned my head away from the freaking gushy stuff that just made me scream on the inside-but it isn't a bad show imo. just not something that could be 'pleasently' shown on [AS]
Monster could be a contender, though i fear it could get boring after awhile. but it could just be as much of a hit in the sense Death Note did.
here is one last show i would like to recommend "X'Amd." it is like Eureka7, but would probably be less annoying to most **cough**no**cough**renton**cough**