A simple and effective nerf to bots would be to limit the amount of roboports. Give the roboports and minimum distance they must be placed apart. Less roboports => less throughput, added more bots after a cap wouldn't add sustained throughput because the roboports wouldn't be able to keep up.

But now my steam setup is screwed (can't expand it), lol. Gonna have to move it.

self explanatory, and probably an easy fix
http://steamcommunity.com/sharedfiles/f ... =712526167