Example...In MCC where he's the underdog character and doesn't even show much emotion other than being extremely grateful for Scrooge's tyranny and refusal to pay what he was worth, like Bob Cratchit should be. Other than being the authority figure and that one outburst of "WHO HIRED THIS CREW?!?" in MTi, he seemed really tame.That was ok though because it was balanced with his kindness and compassion. I totally agree with you that they need to bring back that balance again...Kermit has been very "weak" in character during the many recent projects, and IAVMMCM was the one time in recent years where we really saw that balance again and look at the great reaction the special got! Really hoping that we get the real Kermit back in this new movie, the one that's not "nice to everyone".
Kermit's a gentile soul, but when he gets frustrated, he tends to flip out... like this Sesame Street clip will show
http://www.youtube.com/watch?v=SfXm5qFZnXQ
It's a slow burn, sure. He starts of friendly, gently trying to correct a mistake, and ends up shouting at the store owner and the customers. He even says "TAKE YOUR T-SHIRT AND GET OUT!!" at one point.