If they decided that players could actually handle juggling a support tookit simultaneously with healing, then why choose that over having more frequent damage that would push us to use our healing toolkit far more instead?

The main argument for why we can't have more frequent damage to heal, is because bad players couldn't handle it. But those bad players certainly aren't going to put a support toolkit to much use either. I feel if we're going to suggest they add depth to healers, we should be looking at how to make healing engaging, instead of dancing around the issue and trying to fix it with other random things because we've given up on ever having things to heal.

I don't feel like ripping depth away from other classes to try and patch healers up with something that isn't healing, is the answer.