Make TCL work on Non-playable characters
TCL can only work on the player character in OpenMW.
Morrowind: TCL works globally, this would be very prone to causing issues and may have unintended results, OpenMW doesn't have a fall fail-safe either.
Later games: apparently the command can target NPCs, for example in Skyrim:
UESP: "Essentially, you can fly. Point in a direction and move wherever you want. You can also move through buildings and even the landscape. This command is targeted; if no actor is selected it will turn off collision for the player while keeping other actors stuck in place. It is possible to deselect any target reference by double clicking the same object or area in the landscape, which will cause "tcl" to default itself to target the player."
Aside from how complicated it is in Skyrim (and that we already have ToggleAI), there's still a benefit to having this command work on Targets (like followers) since it allows to unstuck them and can also make them move in the upwards or downwards direction (what allows to change their elevation and get them out of places they can't avoid unless they jump).