I highly doubt Paradox will do this. That would take all randomness away from colonisation, and it seems like people don't like this kind of determinism.
This is the commonly suggested argument ("determinism") and I would have agreed, if the current decision was something different. In 100 games played as observer, the overwhelming majority would result in the same countries colonizing the same areas at roughly similiar times. They would still do the same things over and over again, only they will be deterministically unhistorical That's why I don't think this argument stands.