Whilst there are many things which are possible utilising technology, it can be hard to determine the balance between "just because we can, should we", or being stuck in the dark ages (no pun intended).
One should never under estimate the psychological aspect of particular things to the punters. Often raw statistics showing advantages to safety or cost will have no effect whats so ever in some cases.
For example, if ever there was a move to pilot-less commercial aircraft, well good luck with that. The comfort knowing that there somebody up front with just as much to loose as you is a good thing. The problem, is thats not always the case.