Time for some updates I guess. I tinker a lot, some things work out, others get placed to one side, some things simply never work and eventually I move on.
With that in mind, the MMP paths idea didn't really work out. I spent hours with Vortext's textures trying to get a good match, but simply never could. I think the textures are so detailed that you simply can not represent it well with such a small object. Even with the UV map scaled correctly, some colours simply dominate the model and others never appear. I could just never get satisfactory results.
The overhanging S3D props will make a proper release some day. The only outstanding issue is to re-size them a little as when they are placed .2m higher the game makes them look slightly offset, which is undesirable. I will probably put them into a pack with some updated diagonal fillers. I'm still looking to make some new pieces for FAR and WRC at some point.
Belfastsocretes showed off a rail depot a while back in his CJ, after talking with him I decided to make a new rail-depot building, since I don't know of any good ones. I'm pretty close to finalising the main design:

This is a standalone prop, the doors on one side will be timed to open/close. Next I have to adapt it to make a modular version you can string together for larger complexes. The real purpose is to release the props, but for the sake of making them useful, I will probably include some basic lots too. There are no batted in rail textures, so you could adapt the depot for GLR, RRW, HSR or whatever with some custom textures.