I thought about it all night...I'm thinking the hell mouth might be trying to recreate all of the villians from Buffy's past. When I saw whats-his-name from last season I was like, "Isn't he dead?" then he turned into Glory and I was like, "Uh-uh, Giles killed Ben so no more Glory" then Glory turned into Adam and I was like, "What in the world is going on?"
I guess time will tell.