Lord Urden: seems to have a pretty quick respawn. Also I would consider putting a higher cash amount on him.

Sentient treant looks good and that area is great
Greenpiece also respawned fast

Its nice not being agro'd when in a lower tier resource field

Flame wisps seemed to be invisible, they also sound like a monk when fighting from the grunting to the death sound.

Turoth has grown a couple of feet but is still on instant respawn.

The normal mobs spawn rates seemed much saner than they were previously and it was nice too look at as well as fun