Especially for airship, sometimes people walk out by accident. When you are in a Random Queue, sometimes you want to return and can’t. Please give us an option to return to dungeon (or maybe change the exit portals to give you a “Do you want to leave?” confirmation message, but that might upset players that just want to leave.) There is also the issue where you can’t use the exit portal even if you want to, which could be solved if the portals had a pedestal or something that you had to activate, but that might just get some players trapped.
I can’t tell you how many times I’ve seen the tank bring a mob up, the mob does smash and someone dodges into the exit portal on airship.
I’ve had a few people walk out of the dungeon trying to get a view of their role because their view was blocked and they walked a little too far (some of which may have been on purpose, but I know a few of those people that walked out by accident since I do random dungeons queues almost nonstop).
I’ve seen someone dodge into the exit portal because an attack came with the respawn and they dodged instead of just dying and respawning again. (Muscle memory and panic dodge combined can be killer).