ARAM on normal Rift?

I think it would be pretty awesome to have an ARAM mode on the good ol summoners rift map.

I have about 75 champs and haven't played some of them at all. I think ARAM is fun, and howling abyss is a good map for it, as well as for people who dont have almost an hour (sometimes longer) for a game. But I think that giving a choice between howling abyss and the classic summoners rift would be AWESOME! (maybe even Twisted Treeline?)