I main both SCH and WAR.
As SCH I disagree with your posting. Being a healer is a thinking game in general, and if you arent thinking ahead, youre doing it wrong (both for tanking and healing mind you). The only issue I have is the reduced MP gain from Aetherflow. Other than that, so long as you adapt, you can certainly adapt to the 4.0 changes making it more than a "situational healer"
