Yoshi-P: "If you want more engaging content, go play Ultimate"

[Rolder50]

If you're going to leave the healing to the other healer, drop a healer and bring an extra DPS.

Problem with that is that this often messes up planning for mechanics. If you have a mechanic that always targets two healers but then only have one, then you'll have a random DPS be targeted instead. People would generally prefer to just have two healers then have to deal with RNG in their mechanics.