[Captain Kwok]

An AI that is behind in tech will seek out the treaty element for technology exchange. It's unfortunate though that SE5's treaty element is actually exchange of tech levels, it would be much better for the game if it were just a trade of tech points.

Both the Abbidon and EEE are friendly peaceful races, so they tend to make the most treaties and gain points through trade and tech exchange.

The AI does un-dome its planets and actually quite quickly as well. It spaces non-breathing population when a breathable population is on the same planet. It does know enough to not drop non-breathing races on un-domed planets afterwards. It also uses idle Cargo Transports or Colony Ships as population transports.