i've seen enough old muppet show episodes to know that "bitter victim" is a better description of the original kermit than "compassionate muppet leader".
kermit was constantly stressed out by the people around him. he tried to make the best of it, and always gave people a second chance. but, they usually just continued to take advantage of him. and, once in a while, he'd get pretty withdrawn and upset.
in a way., he's kind of like a character in a kafka novel: he doesn't know how to deal with the absurdity that's constantly thrown at him, and is consequently constantly on the brink of a total breakdown.
i hope that they don't turn kermit into a smurf or something. that would be very sad.
http://www.thewrap.com/kermit-frog-steve-whitmire-henson-muppets-fired/