Yeah I vote no on the naked mini's. If you're that desperate use a search engine :S
I wouldn't say no to a mini wurm. That'd be cool having it pop up out of the ground next to you and seige something (not that it would do any damage but hey).
Takes on the form of whichever character you're currently on O.O
Am I the only one that would find this extraordinarly boring? I just can't understand what would be so great about having a miniature version of your character.. following your character.