the fact they are changing the paladin seals for Burnign crusade speaks volumes. because the faction inbalance started way back then, if not earlier
ill be glad to see the faction deviced go. it makes no sense after Nyalotha, Legion, Wod, the later parts of Cata, the early parts of wrath. and most of Burning Crusade.
The fact its called world of warcraft is irrivant, because the war part doesn't have to mean the war between the horde and alliance. hell it hasn't been about the war btween the horde and alliance since Warcraft 2. in warcraft 3 the main threat is the legion and scourge and some old grudges, and the orcs cutting the nelf forest down. nelves weren't even alliance back then.
as for pvp, that could be a cordent of section with arerna and battlegrounds aka blood sport.
Warmode: change it to a bounty system where you get rewards based on how high you can stack your bountry with a timer that counts down and each time you get a kill the timer resets to full. stack it high enouth and you get the outlaw debuff that flagges you free for all. and if you manage to run out the clock on your debuff, you get pvp based rewards like cosmetics, mounts, titles and maby even loot.
you could even make warmode not have flying.