Don't healers have as many heal buttons as a DPS has DPS and as many damage buttons (if not way more) as DPS has defense and self sustain?

What are we asking for exactly? When I heal (I main DPS) I play SGE and am fully engaged when running a dungeon or other content. Also play on controller so I always have to bounce from my back bar (double tab or R1) to my main bar. It feels pretty busy. It would suck to have to do a DPS combo and manage healing.