Every class is pretty useless right now compared to the Druid. The Druid can be an effective warrior, an effective archer/rogue, an effective mage, and can transform into a creature with special abilities.
Powerful for sure, and they can bonus action self heal too, returning to form unscratched. They retain their mental attributes in combat, but adopt all the physical ones, so you can dump stat any of the physical stats, in favor of the mental.
Fighters, Warlocks, an Rangers are also very useful ATM.
