Originally Posted by
Gaidax
BFA mythic raiding item level (I think it was ilvl ~130ish, except neck ofc), leveled by questlines mostly. That gear was relevant until like level 56-ish, already had an odd upgrade at level 52 from some rare in first zone. By like 57 I replaced most of pieces with greens/blues and shit you just get as quest rewards.
As for Voidwalker tanking - there was never enough mobs to be of a threat - I imagine if you somehow manage to gather half a zone it might be an issue, but there just were not that much mobs there anyway and you'd just rekt them anyway with Infernal. I don't know about Felguard, I leveled as Destruction, but really there was literally no challenge leveling, even rares I met on the way, except for that one rare that hit like a frikkin' raid boss for some reason.
Outside that one, I don't even think I had Voidwalker dying at all or maybe like once, which is whatever because you resummon another instantly anyway.