Given Bethesda and Id are owned by Microsoft it’s a easy collaboration and lot of heroes are suitable for a doom skin
Soldier 76 is Doom guy / doom slayer
Juno is revenant
Lucio is Imp
Reaper is hell knight
Dva is Pinky
Ball is cacodemon / spider demon
Mauga is mancubus/cybermancubus
Rammatra baron of hell
Junkrat possesed engineer/ cueball
Echo summoner
Hog is tyrant/ gladiator
Reinhardt marauder/ dark lord
Genji Prowler / dread knight
Moira maykr drone
Mercy Khan makyr/ samur
Orissa is doom hunter
Doomfist is iconofsin
Symmetra is whiplash
Brig is riot soldier
Also
Mythic weapons
Reaper/ hog - super shot gun
Bastion/ mauga - chaingun
Venture - chainsaw
Symmetra - plasma rifle
Sojourn - ballista / unmakyr
Genji - crucible sword
Pharah/zarya - BFG
Doomfist - berserker
Reinhardt - sentinel hammer
This has some serious potential for Halloween doom eternal collab