From a very quick search (about 10 secs), it looks like nationalism is a hardcoded upgrade. You may be able to simulate it. Let me look around a bit and see.
Thanks, I thought it was hardcoded too but was not positive. I appreciate you sniffinf it out for me. Let me know what you find and if I can be of ANY help.
Quick idea, for the GLA, make the "nationalism" idea make the units move faster. That can be done with another workaround, I'll create another tutorial to go with the other one tonight. I'll e-mail them to you when they're done.