A good QoL change would be something like having all your cooldowns reset after wiping in a raid.

I am also against an elemental resist system. It always ends up being a system that only a few classes can participate in, and ends up being more of an annoyance than added depth. The few classes that can participate in it end up being either completely overpowered because the boss is weak to their abilities, or underpowered when the boss resists all their abilities. That sort of power swing is terrible for the person behind the class. This community is not above excluding people based on class for certain fights - Just look at all the "Ranged Only" Garuda Extreme fights when that was a new fight.

The alternative is having elemental damage on gear, at which point it just becomes a collection and inventory management nightmare.