The boomkin is powerful, he or she takes many hits and returns with lots of roots and magical spells. Hopefully the ability to cast Remove Curse in Moonkin form helps out at times, it's coming in 2.3. ;-)
We do want to increase the utility of the Druid of a bit, which can be a little rough in their specialized forms, so we are also making Cure Poison and Abolish Poison usable in Tree of Life Form.