Have all factions running A.I. constantly so proper tests can be run on new content. What's the harm? Maybe 200 bots per faction.
Though it could be a cool idea, we don't currently have plans to create AI in-game. That would be a huge undertaking for the dev side, and isn't realistic for us to do (especially when they would only be implemented on Test, and the tech would probably never be relevant for Live servers).
How about having some of the dummy targets in the shooting ranges perform some simple random movement pattern (also on live I mean)? But of course only if this can be done with very small dev time.