Yes. The joy and gleeful cackle as two little dinosaur/drake pets horribly mutilate the defenders while the rest of the party is knocked into green goo by a hunk of rock on a rope. God that was fun.
On topic, it does seem like it could be a little on the mindless pounding side, but I haven't gotten to experience that first-hand yet. The only house rule I'm currently considering is allowing players who multiclass into other classes instead of a Paragon Path to gain that classes features when they would normally gain the PP features.
ghost_warlock, your house rule seems potentially dangerous with Retraining. Or did you cover that and I just missed it?