People have suggested ways to change things, they just get ignored by SE so people stop posting in the thread and it falls off of the front page. Just off the top of my head I know me and Ty have both posted reworks for things (iirc Ty did all 4, I focused more on WHM and SGE), but the interest died down and so those threads are now on page 4 or something where nobody will ever find them again.

There's literally zero excuse at this point to not have a melee healer though, as the hitboxes on bosses are so large you have 100% melee uptime in every fight anyway. If a Holy Paladin can work in WOW, where Kurog's hitbox is 'pretty small actually', it would work completely fine in this game where you can reach the P7S boss from 90% of the arena.

AOE Rescue will not 'rescue' the healer role. It'd be potentially interesting as a tool to have 'just in case' but it's too likely to just get everyone killed too. Imagine P5S double stacks, AOE Rescue and oops everyone's doublestacked and you're dead