I just spotted a detriment-worth of units built up in a game I spectated earlier today on Banana Republic. The AI had built two solars and some lotus turrets to completely lock down the bottom-left corner, where their main factory was located. As a result, the AI was spending enormous resources to build up a swarm that wasn't getting used.
This behavior is obviously beyond what one might expect to account for in AI development, but still, it was humourous. Perhaps though, in this and other situations where the AI has built a factory and many units that are piling up, it might trigger the use of transports? have it trigger a high-priority task of building a gunship factory and some Hercules transports to build a ferry system. Just a thought.
I'd post an image if I could, but I don't know how to upload one just for this post.