I find it rather tedious to have to wait for an Arena to reset on its own when going for achievements such as Flawless Conqueror and Spirit Slayer. If we're going for a No Death run and end up dying, we now have to sit and wait for the Arena to reset itself before we can continue. Frustrating.
Exit arena, switch to Vet. Enter freshly reset arena.
Profit.
That only works if you're grouped with someone now. It was changed sometime in the past, for whatever reason. As it currently stands, you literally just have to wait the timer out to reset itself.
Exit arena, switch to Vet. Enter freshly reset arena.
Profit.
This still further proves my point that we need an easier way to reset Arenas. Why should someone have to go through all of that in the first place to simply reset an Arena?