[PvK]

I don't know that you can (mod out the score, assuming that's what you're suggesting, Narf), really, or at least, not without creating a bunch of other issues to deal with. For example, the score value of ships seems to be based on the tonnage, which means that in Proportions mod, where colony ships are about 1500kT or more (instead of 300kT in unmodded), and each transport to move a million people has a considerable tonnage too, an empire with a bunch of large colonization ships and almost no warships ends up being quite intimidating to the AI.