I will try to join in this. As is probably apparent from other things I have said, my preferred environment lies somewhere between on the one hand a pairs ladder with rules and rankings and, on the other hand, a random pick-up with nobody knowing what agreements they have or how the agreements are played. But I will give this some thought.
As to imps or mps, I don't much care but a thought occurs to me. It could be interesting to give an imp score computed as follows: The robots, unseen, play the hand. The board would then be imp scored by comparison with the robots. So, if we are in 3H off one non-vul, and the robots are in 3H making, then the imp score is 5 for the defending side. It's not that the robots are perfect, certainly they are not, but they usually are not totally nuts. Whether this can be easily done I don't know.