So I was wondering if I have Mister Mind and Icicle on a team would this combo work: Icicle uses copsicle then Mr. Mind uses compel him to do it again. Can he use his special power two times in a row to potentially put 2 tokens on a character?

I suppose that he could, if he still had room to get three new squares of Barrier next to the target. His first Copsicle Barrier would still be up, taking up space and possibly blocking line of fire.

Given the costs involved, why not just put two Icicles on the team and have them each Copsicle.

What I want to know is: Do Copsicle tokens have the PD team ability?

That's a fair point.

Yes, however there will be a ruling that blocking terrain blocks its own lines of fire.