Advanced AI?

[pd]

I've just been playing alot of Generals and Starcraft recently, and there's something about the AI that owns YR: expanding territory.

AI builds little sister bases at places where they find resources.
This makes games longer and far more interesting.
Besides it makes large maps very useful.

The question is, how could something like that look like in YR?
AI doesn't seem to care of base expansions by now. I.E. if it captures an oil derrick, it won't (unless an accident happens) place defenses there.
I also don't think it would react if you wrote a script that tells a MCV to deploy somewhere.

I need a few things clear here: what can the AI be forced to do regarding base building?

With that knowledge I might be able to concept the easiest possible method to make things like that work.

AI will be one of my targets anyway in the future.
For instance, what are custom SWs for if you can't make the AI use them to support a specific team they built? (i.e. first EMP-strike a base, then attack it)
Though that's another chapter...

Oh well, a note: please don't bug me with like "can you also do...?" or "would you be able to ...?" concerning this, I need facts, no questions.
Oh and don't look forward to these things, I didn't do any research and I don't think my current state of knowledge would be sufficient to code things like that