It seems like they plan on allowing more places in the long term, this is just the open testing pretty much.
You’d be surprised what has collisions and what doesn’t. Went to the big freight ship out there through methods that are viable in-game (hoping they don’t patch this as I’m sure it makes their data research/data farming far more interesting) and whole thing has collision even though it looks very low resolution and is extremely away from the main land.
plus Slappy, one of the mission runners, talks about the large bridge possibly being worked on in the future (which, the bridge has collision but the area surrounding it doesn’t. Funnily enough you can see the building that they instance a bunch underneath the map right there)
