10.0 could Realistically end the Faction Divide or at least, dramatically lessen it’s effects.
BFA clearly felt like the Nail in the coffin for the factions, an Expansion that was marketed entirely about the Faction War, ended up with Characters holding hands, Alliance and Horde Forces standing together as one, Anduin giving a speech in Orgrimmar, and us Teaming up against the Old Gods.
Blizzard has shown with Flying colors, exactly how petty and meaningless the Faction War is. The Only Reason the Factions go to war with each other, is to set up for a more substantial and important Villain later down the road.
And After our “War” in BFA, what do we get? An Expansion where the factions do not matter, and are entirely insignificant to the greater plot of Shadowlands.
Alliance and Horde players both explicity aid characters like Jaina, Thrall, or Tyrande.
Clearly Blizzard has shown that as soon as something more important exists in the Story, the Factions are entirely meaningless.
Meanwhile, In Classic:
The #No Changes community had to bite the bullet and accept that Faction Imbalance is simply too bad for the game to properly function, and now Battlegrounds are Cross Faction to allow for better gameplay for everyone. I’m sure plenty of people are upset about the Integrity of the factions, but Blizzard has decided that gameplay is more important.
In Summary:
Cross Faction gameplay allows for a smoother, more freeing game play experience for Everyone involved.
Blizzard has shown they understand that Gameplay is more important to the game than arbitrary faction lines.
Everyone should be able to Play the game how they want, and with anyone they want, Regardless of something Arbitrary like Race Choice. If a pair of friends both Discover WoW, and one of them Really loves Dwarves, and the other Friend really loves Goblins, then Nothing should prevent them from playing their favorite races together.
And of Course, for those Die Hard Faction Fans. They should have the ability to Make “Horde Only” or “Alliance Only” Groups and Guilds. Let people choose to restrict themselves if they want.