TR Knight & Amy Lee (or someone similar) are desperately wanted for specific lines (against my Dave Grohl, a Sara Ramirez, and a Kat Von D) that would create other lines as well. I know they're infrequently used PBs, but they make beautiful character bases (seriously, they have a lot of character) and we're all about the kickass writing & epic fun (not just the 'pretty face') @ thehudson, so you should totally consider it ;) There's got to be someone out there who is willing to PB them.
The Amy Lee line involves a bit of seething hatred for reasons TBD with whomever is interested in filling it.