Yeah, I like his other works well.
It looks like this is going to have quirky indie tone and feel to it, instead of a big buget fantasy look and feel- like most Disney movies (Which this could have easily ended up being), so it will be interesting if this is marked for little kids to see, because most kids movies don't have the whole indie feel to them.
I remember reading that they did have test screenings on little kids, and the parents complained that movie seemed a little too dark for them, so the filmcrew had to go back and reshoot some things-tp make it slightly lighter.
Muppet-ish is fine with me. Better than typical cgi crap, imo.
It gives the monsters a more authentic look.