The thing we don't know is that with more tools, maybe managing heals will be more complex and engaging, and maybe you wouldn't have time anyways to weave all the DPS actions anyways. Heck maybe we will be taking more damage overall requiring you to heal more.

If we end up just pressing the 1 single target damage, or aoe damage spell all the time then yes I'll agree with all the doom and gloom, but if I'm constantly juggling all my heals spells and weaving in a DPS spell once in a while, then I'll be just fine.