Well, that didn't take long.
Finished Costume Quest and the GoI DLC. Grubbins on Ice was especially fine, but ultra short. Also, it's level cap at 14 (and they're starting out with 10), so not much going on in that respect also. This game gets a "very nice" from me, and they're really giving old ideas a new touch. I'm not sure the motivation could have been so high if the game was significantly longer...