Blizzard, please add tabards for all legacy factions so we can gain rep while farming transmogs/mounts/pets in legacy dungeons and raids

I've been doing strat for Baron's mount recently and found it's a great way to farm classic rep. It'd be nice if we could do this for every legacy faction, rather than waiting for specific timewalking events to get that one faction that takes weeks to grind out to exalted because you can't farm it in a dungeon.