top of the list would be
Jubilee
Banshee
Dazzler
Longshot
Sunfire
Forge
that way we'd have all the x-men characters up thru the Outback days...
i would also like any of the original New Mutants, as we haven't seen them yet.
i'm still pretty new to the Avengers world (just started reading with Disassembled) so i'm not sure which of those characters i'd want that haven't already been released...
would love me some Young Avengers, though, and Runaways of course...
also in the non-marvel side, if anyone reads Dynamo 5, i have a letter printed in issue 15 requesting D5 minimates. the response didn't sound too hopeful, though. y'all should back me up!