My guild is cross-faction and we still struggle with the roster boss. Nobody in their right mind playing high level content wants player activities separated by faction anymore.
Prior to cross-faction guilds, I was stuck playing Horde characters I didn’t like so that I could play with my friends. Finally I can play what I want and still enjoy the game. You want to take that away? Get bent.
I leveled an Alliance character to max during Shadowlands, just an alt to play on when my friends were offline. I wanted to run some m+ and looked at the listings. There were 4. I switched over to my Horde main and looked at the listings. Dozens.
The game is better now than it has ever been. Get your head out of the past. We don’t need Horde vs. Alliance for it to still be Warcraft. We’ve just concluded our war against the Primalists and the Incarnates. There will be more war to follow in The WAR Within.