As it has been said countless times, it seems like the solution that makes everyone happiest is for the game to be designed with limited fast travel, but with the option to remove that restriction.
The default option in an RPG should be the one that makes sense lore-wise (RolePlayingGames are all about immersion). Then, if the developers have the time and resources to develop a setting to improve QoL features, all the better. I think it would be perfect. Just fast travel from a teleportation point to another as a default mechanic (which makes sense lore-wise), whit the option in the setting to be able to teleport from anywhere to anywhere.
