Hi,
I noticed a few issues regarding blueprints

placing the Traindepot as a ghost is currently not possible, the train construction sites can't be included into a blueprint and placing train construction site ghosts won't let you put them close enough together for them to work.

Is there a way to remove those problems?

I've had the same issues. For now I'm going to make another post about this

Currently no, the collision box is set atm that they don't allow placing next to each other, but at least with 1 tile inbetween, I could be more restrictive where it can be placed in order to reduce the collision box, however I need to fix some related issues to that first... It's somewhere on the todo list