I've only run a bit of it (and not as a main campaign yet), but I've enjoyed it thus far. I posted about it in one of the other Rime threads. I just picked one of the towns with an interesting quest (Bremen) and dove in. Connected the quest on the fly to the one in Lonelywood and the players were hooked and having a blast.
If I were to build a full campaign out of it, I would spend a bit more time tweaking things, but I think there's plenty of usable, interesting material here.