Open on your alt(s) first and hope to bait the bad loot out
or
Open on your main first and hope the game doesn’t notice that you’re on your main
It’s a random roll of the dice either way - does it really matter. Also, Great Vault should have died and we should get all those pieces in the stupid vault . Loot this expansion is a s—show.
If your a fury warriors and need weapons, always open with Arms spec.
Vaguely recall the vault being messed up and needing a hotfix in shadowlands so I give it a bit now before I open it.