IM rules, as they are, are great, but somewhat shallow compared to something similar, like SM. In SM every character has 3 distinct modes (sandman, venom, goblin, doc ock). In IM only the IM targets do have 3 modes. For the others, there is only 1 mode each (whiplash, war machine and monger). Seems like they ran out of time. I can't believe no one has said this yet.
As to the other question about rerunning it - I love mine and since they only did a limited initial run, I think a rerun would sell and even though it would probably dampen the price appreciation of my machine I think they should do it anyway. It would stop all the pinheads hounding me about selling mine (by the way, not gonna happen).
Even better, do an LE run - I might even be in for 1.