What about Arthas, when he does army of the dead with ghouls that backstab and shoot spikes from the ground you have to dodge. Also, the ghouls are untauntable and will go with the ones with lets say top5 threat, forcing you to never turn your back on the ghouls and still keep shields, pom, coh up at the same time.
Yes, the fight will look like this, I have predicted it!
ps, The fight will have Tirion Fodring and some other argent crusade guys in it and it will end in Tirion Fodring sacrificing himself, giving you a chance of getting ashbringer.