Repeatable raid achievements
I’d be happy with that.
There’s all sorts of achievements they could add to help create more incentive for repeating the wings after they’ve already been initially cleared (beyond re-doing for fun, low-man practice, etc).
I always thought it’d be nice to see achievements for things like killing a boss under a certain time threshold, or killing Matthias so many times with Bloodstone Bisque effects on group, etc etc. There’s tons of additional achievements they could implement, even maybe throw in some hidden ones for us to hunt.