World of Warcraft's portrayals of things are noticeably cartoony when compared to real life equivalents. Treants and druids in Tree of Life form are no different, being any combination of cute, adorable, cuddly, pitiable and likeable.
1. Stubbiness
The classic treant model resembles a wide (for its height) sapling with short legs. Not only would they be appealing to hug, they would find it somewhat difficult to run around. In fact, the druid Tree of Life form formerly suffered a movement impairment.
The new Tree of Life form features longer legs, but still retains its width (in fact, it is much wider!).