Well, I was honestly never a big fan of the original show, but I was really excited to have any Muppet show airing on TV so I gave it a chance and I actually really like it. The episodes are well-paced and funny, the movements of the characters and their designs are really great. They really feel like they're puppets, like you could really reach into the TV and give them a hug. From the texture of Fozzie's fur to the fleecy look of Kermit, it's all great. I actually found Baby Kermit unexpectedly adorable. I really liked the song that he and the dragon sang.
So far, it's funny in a way that can appeal to both older and younger audiences. It's educational, but not in a way that beats you over the head with the message. And like others have said, i'm glad the show came out now, as opposed to eight years ago, when the plots would've been more dumbed down and they're probably would've been a lot of false interactivity like on Dora or Little Einsteins.
So far I don't really see why Summer was necessary. She seems kind of bland and like she's just there, but then, I haven't seen the second episode yet, so i'm sure she'll get more time to shine in the future.