This option would be so incredibly beneficial, I’m surprised it hasn’t been added yet.
The option to turn off collisions on a workshop model would allow you to set up collisions ingame through invisible walls, meaning maps made in Blender can be enterable without having to go through the long process of breaking up objects to allow correct collision. It would also allow you to create things like planets with atmospheres that you can pass through, or hidden entrances. There are so many possibilities with this single addition.
I’m not sure how easy this would be to add to the game but it would allow workshop furniture to instantly become much more versatile.