I think that server side framerate limitations are preventing too many actions from happening at once. So they are often required to do hard hitters instead of a more constant bleeding damage. Yet such sort of damage can do quite a lot on the healer side.
But i might have an idea that can force healer requirements, increase esuna usage (and with variety in strategies on usage), and is easy to understand:
Each raid wide aoe the boss does adds 1 special vuln stack. This stack lasts until the end of the fight, but can be removed by esuna.
The effect of this is that if these arent mitigated, the incoming damage simply becomes too high to mitigate. And the way these can act can even vary:
- We can make the stack only affect the next aoe cast and cause it to apply an additional fixed damage value (20% max hp per stack), while it can be mitigated, it wont be easy to mitigate 100% damage hits repeatedly
- The vuln stack simply is a counter. After having X, you die.
- It simply increases incoming damage as we know now. Can still be a hassle without changing much otherwise.
And some more notible ideas:
- Boss aoe applies doom to everyone with 60s countdown. Esuna cures this. Easy, but breaks any non healer meta.
- Team missing health causes next boss aoe to deal that missing health as damage (no more staying below 50%). And with modifier could also be made a 66% or 75% (double or triple missing hp in damage)
But i think the vuln stack idea could on that be a good way to adjust fights in a more generic way.