Sadly, it is the end-game group that has gotten the priority list. Random content, and world content, has a back burner because the majority of the attention goes to M+/Rated PvP/Mythic.
And because it is still in testing I guess.
Wishlist:
Cross-faction guilds.
Cross-faction Random Battlegrounds (You can do this sorta, with merc when available).
Cross-faction Random Dungeons.
Cross-faction Timewalking Dungeons.
Cross-faction World Content (Quests/World Quests, not Warmode).