It could be coincidence, but I don't think it is. Of course, unlike your example, I have no control over what kind of assistance the AI provides, but he does seem to send stuff. It is evident enough to me to have to be careful with it - I have sent my AI ally to his death for not following through on my end with coordination. When I put down an Attack or Defend marker, the AI will often send what it can. I believe the WARGAME: ALB AI does this as well. In regards to the typing of commands that could be something as simple as requesting a particular type of unit (tank, helo, support) to overall strategy (flank etc).

Perhaps a system similar to this could be introduced? Might take some work though. He also had it so you could type in a few simple commands into team chat and the AI would change its strategy, for example if you typed in 'rush nuke' the AI commander would try to get Nuclear weapons ASAP.

Sorian released an AI patch for Supreme Commander: Forged Alliance where by when an allied player put a ping on the map, the AI would respond depending on the type of ping (attack, defend, help)

Supreme commander sorian ai