Having elaborated on the above, I’ll also add that I am building pawn handling into the Loading Screen System (so that it becomes more of a “Level Transition Suite”).
There will be designated portal actors that can be placed around and be easily configured to init a level transition while also determining where the pawn will be placed in the new level (e.g. at Door A vs. Door B of a hallway, depending on which direction the player is coming from).
The system will be both able to spawn a new character (based on the GameMode settings, even in sublevels) as well as to keep the currently possessed pawn alive throughout transitions. Everything configurable with a few checkboxes.