Dunno. Cannot queue into delves as they can be soloed. The target audience of people who want to have delves are people who have their group and want to play with them. No plan for queues at launch currently.Cross-realm guilds are coming in war within. Cross-realm mythic restriction goes away too.
Cross-Faction raiding was allowed in Shadowlands Patch 9.2.5 and then Cross-Faction guilds became a feature in Dragonflight Patch 10.1. This next step will continue to break down barriers for players allowing them to create cross-server communities to raid with that aren’t content-restricted allowing for greater flexibility when choosing servers, factions, and guilds.