It seems to me that if healer skill level diverges too much in any given feast/frontline match, the team with the better healer will win (only talking pvp; not shitter pve). At least in my case this has -kinda- always been true. I'd say, if skill level diverges at a certain degree (at what lvl SE has to decide), the losing team should not lose rank points in feast. Imagine: A gold-rank-dps, teamed with a noob-no-rank heal against a gold-rank-heal. Is that scenario fair for the gold-rank-dps for him/her to lose points, given how important healer is atm?
I'm saying this as I'm a no-rank myself, playing against no-rank heal with silver-rank-heal and easily winning.

One could probably argue against and forth for an eternity, but I'm kinda stedfast there is a healer issue in general. Concerning pvp that is. Or maybe the average skill level is just this low.

tl;dr: Don't make PvP outcome too much dependent on healer skill level.