For each station type, you have a set of rules for each block type that says what kind of block each face usually connects to (A dice roll on a look up table), plus an overall tonnage value which says how heavy the station usually is as a whole.

I assume the four circles block is the core, so for the oxy station, you set the faces of the core to usually connect to the diagonal girder block type, those to usually connect to oxy tanks and oxy tanks usually connect to the square girders.
If you set the oxy tanks to sometimes connect to diagonal girders, it would occaisionally create bigger, more sprawling stations for example.

For the nav station, set the label block to like girders, and the core block to only like label blocks and you should always get stuff that look like a nav station

Oh and btw.. Farbs; please don’t go die on us before the game is finished. That would suck a lot!

Oxy station revamp is coming along nicely. I just have to finish the new module and I’m done.

i definitely think giving the rare chance of obtaining a oxy generator or a short range nav would be amazing.