[dogscoff]

There are lots of reasons why Standard or TDM AIs won't work well in Proportions, but the most important ones are:

Facilities: Say a standard AI sets up a mining colony. The computer fills up the build queue by asking itself "What available facility gives the best mineral production?" In the standard game, this will cause the AI to build monoliths or mineral miners.

Unfortunately, in proportions, the answer to that question is "Cultural Centres", which tie up build queue for several thousand turns. Same for radioactive colonies, farming colonies, resupply depots. The trick (as I understand it) is to persuade the AI to ask a different question=-)

Also, AIs need to be adjusted to deal with the quasi- newtonian propulsion and all the new components (ie the different combat sensors.)

In addition, I think the balance of ship supply has been changed in Proportions, so AI designs which would be fine in the standard game are crippled by low supply storage in Proportions.

I'm sure there are a dozen other reasons, but these are the ones which occur to me, and on their own they are enough to require a major redesign of the AIs.