Has anyone made a nice little guide or video for this mod yet? It seam's it could be a great addition to end game play for us filthy casuals! I would like to see some limiting factors, a upper and lower limit put in place.

Hey, thanks for checking out the mod! I've been taking a Factorio break since getting burned out on my 10x Space Exploration run, haha.

Are you asking about a way to make tech costs grow more slowly at higher levels? If you're using the custom formulas you can tweak them to use square root or similar.

For example, the default artillery shell range is 1000 x 2^L, which goes 2000, 4000, 8000, etc (L is the research level). If it's changed to 1000 x L^.5 it would go 1000, 1414, 1732, etc.

If I ever make a v2.0 I'd try adding more custom operations.