Oh, 'cause that's a job for the devs to figure out with their libraries and resources and development pipelines, not for random forumgoers to argue out the intricate details in a forum interface that barely exceeds 2000s era forum organization/function with spotty information based on how things feel to them.
Half this forum can't describe the difference between 2 pictures in a constructive manner, and you expect us to pour over spreadsheets, flowcharts, and brainstorming boards before a player's desire for a QoL feature can be deemed worthy of the devs' gaze?
Also.
If we want to handle it similarly to how WoW handles it, change the dutyfinder interface within instances to have the same functionality as it has outside of an instance. Allow the party leader to queue the existing party and its remaining members for a duty as if they were outside of the instance already grouped. They can add a readycheck-like function on queuing to get consent from the individual partymembers. Those who deny are removed from the party and those who accept are queued in with the leader.
Or, if we want to simplify it to be more comfortable for XIV's current interface, just have a choice on exiting the dungeon to remain in the crossworld party for ease of continuing on with the people you were running with so we don't have to stop the groove by having a post instance discussion of if we want to continue and how to set up the group afterwards and then have to root through the contacts list or fiddle with finding/creating a PF. Basically just a button for "automatically invite/join a crossworld party with previous group". Like this is a really tame QoL request???
And I see a lot of confusion surrounding the term "next dungeon". It does not mean some instance that is somehow predetermined by the game for the group to be queued into. It's a stand in for the answer "Hey guys, that was fun, wanna run some more, if so what do you want to run next?"