Guys,
I think Teflon Billy's point was not that it was a shame that there could be no "4E Mutants and Masterminds," per se, since they've already said they're not going to update anyway. It's that the GSL doesn't allow the creative room to make an innovative, elegant game like M&M that borrows heavily from a system that's immediately familiar to lots of gamers. It was easy, having taught someone to play D&D (or any d20-esque system), to teach them to play just about anything covered by OGL. That allowed really good game designers to write and publish products for a wider audience of gamers than D&D alone can draw while unifying it all together with a system nearly all of them are familiar with.