I think because Freeroam wasn't part of the gameplay when GWE was released, so they saved themselves some work, not having to define VirtualHIDInteractionComponents for the coupler (hitbox, associated actions etc...) because it just wasn't meant to be uncoupled in the game.
At Etches Park depot on the MML route, there’s always two MK3s and one Class 158 uncoupled, I don’t know why we don’t have the ability to do this by ourselves… I hope this will be possible with the upcoming “train formation mode”
I could say they should add support for it... but when they added Livery Designer support to the HST they broke it
Well, on PC you can. GodMode can spawn single units, whereas TSW only lets you spawn predefined formations. So we can already make our own formations on PC Here's my working mini HST
