This is sad news. Hopefully whoever takes over (assuming it continues) will do a great job. But still, there are many characters who haven't been in the comic book, who haven't been drawn by Langridge (I know, they might appear in the next storyarc which will still be done by Langridge). Langridge's comics still haven't included appearances by the likes of Marvin Suggs and the Muppaphone, Lips, Doglion (has he been in ANY Muppet comics from Boom! Studios), Gaffer (ditto), Angus McGonacle, and others.
Still, if another writer/artist takes over, I wonder if Pepe and other Muppets Tonight characters will start to have heavy involvement in the comic book. I'd still like for Jim Henson Hour characters to be worked in if MT characters do, though the writer of Muppet Snow White said that they couldn't include them (still not sure if it was because of production or a misunderstanding of ownership... Not sure why Henson would still own the MuppeTelevision characters).
I'd do it if I got the opportunity, though I'm not a professional. In fact it would be cool if Disney and Boom gave some of us fans (the ones who haven't worked for Boom!) the chance to write and draw different issues. Probably wouldn't happen, but who knows?
But aside from that, if only one writer takes over, I'd like it to be the writer of Muppet Snow White, since that was heavy on minor characters fans might not be familiar with, like Spamela and Lips, who even had featured roles. My choice for illustrating would be Amy Mebberson. In fact I'd like to see what a Mebberson-scripted Muppet comic would be like (even though she's said she doesn't like including minor characters just for fan service). Not sure whether she's written a comic book before or just illustrated.
Another good option would be if a different writer and artist were assigned one storyarc at a time. I read that the illustrator of Muppet Robin Hood was instructed to imitate Roger Langridge's style, which didn't turn out too well. It'd be interesting to see that illustrator given a second chance, to see how his depictions of Muppets would look under different circumstances.