I think I might not be unique here to suggest that railbooks, and belt balancer books, are pretty well optimized in the blueprinting "meta" and that, among other blueprints traded generally, it's generally a good idea to avoid attempting to reinvent the wheel on one's own.

I have a set of blueprints that I've been using for years. The rail-relevant portions of the designs are fine. My issue has nothing to do with signalling, throughput, or anything else that could be rationally called "meaningful." But my current "rail gauge" is too narrow -- my rails all have a 2-tile gap in the center median, and I'm hopeful to widen them to 4 or even 6.

Futzing with my existing blueprints in a creative-map testing environment is frustrating. I'm forced to manually transcribe them, tile by tile, and making changes to sizing, angles, and signal placements by eye, and it's not yielding the results I need.

Do there exist any scripts or macros that allow a player to take an existing design, without fundamentally altering the way it works, but simply "explosion-viewing" all of the pieces to increase the interstitial spaces?