I see no reason not to triple box in Shadowlands. There's arena that's still capped at 3s and Torghast should be multibox-able to some extent. If Multidayz/Ellay can do a 5 mask multibox, I see no reason to believe we can't do Torghast. Also, nicely enough there's no real gating in Torghast like there was with essences in visions, so totally shitting the bed as a multibox doesn't screw your chances at loot/upgrades.