Why is Blizzard AGAINST the players, though?
Maybe they could communicate it better, like: have a "life" class (=classes) and a "death" class (=covenants).
But they shouldn't make it just 1+1 ability, they should have gone all-in, like 5-10 new abilities per death class, now that would be a good reason.
Also, increasing the 5-player dungeon cap to maybe 6-7 players? This way there wouldn't be a "strict" 5-player meta where you HAVE to bring CERTAIN class/spec/covenant combos to cover all that is must-have, like interrupts, hard CC, buffs, debuffs, dispels and so on.
With more players more areas (I'm not talking about damage/healing!) are covered so there isn't a strictly superior choice BECAUSE an extra ability or mechanic-skip or something like that, so players are "free" to pursue their interests and only care about... well, meaningful RPG choices.
But this, where already god-like specs get even more to play with, and already forgotten specs like enha/shadow/WW/feral are still getting left behind no matter their covenants? Problems are getting piled up.
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Just like "how exciting to get a Legendary" meant if you got your shit ones you felt really really bad.
It's not an advantage if it's expected.