First of all I wanna express my gratitude for all these years. Been here since it was only Neltharion in 2010, so I've seen alot of these. Regarding to topic my honest opinion is that it would be best to remove eof drops and just have them drop mounts / scrolls / general aesthetics or funny gimmicks. Maybe lower their hp and have them scattered all over the world so it doesn't flood wintergrasp like it was with snowmen. I've only seen few of those mobs in whole Darkshore/AShenvale etc, and it's kinda hard to tag them first with all those raids going on.
And that you move the custom quest chain in some custom instance like it was with cows, just so they don't get camped with mboxers. Let them roam the invasion areas like Ashenvale, where some brave will try to confront them and fail miserably, others will avoid them etc.
Thingie with all those eofs is marketplace gets flooded with primordials, which affects whole economy then. More ****ty charachters go up for sale on marketplace (like we don't have enough of those already, spamming global - Sorry Todd but no one is interested in your mighty retri paladin with lousy achievements and no bis gear. ) Or the other scenario where there is a new wave of people who don't have a clue about their class / how to optimize their charachter.
That's my 2 cents.
Enjoy your holidays everyone.