That’s pretty much it right there. Ferals in later tiers, IMHO, are probably the best (non AOE) tanks. However, if you swap your feral into the MT spot you’re stuck with a potato prot warrior trying to DPS.
You could have your prot warrior respec, but I think many guilds will just keep the warrior in the MT spot and have the feral dps when not tanking instead of running two DPS warriors. That’s the easiest solution.
I predict that the sweatiest guilds may run 2 ferals in Sunwell, and the prot warrior may have to swap mains for SWP. Time will tell.
You know what burns people out faster? Constantly wiping to easily avoidable mechanics, losing gold to consumables to wiping over and over to things that shouldn’t be that difficult. People not improving.