The only logical reason not to have this feature is for cheaters or people who want to give away all their land. They'ed just decommission all their troops and there would be a massive power void. I think you could get around that with some coding that make it impossible to decommission starting units though.
And to anyone who says the core elements of the game and strategic value would be ruin if you could decommission units I say, no. It would just change that and add a new face to the strategic value of the game. From a general's standpoint this makes total sense. We have manpower tied up in row boats? Fire them! We need them over here on these cannons!
As far as getting resources back, not sure it matters, but a percentage makes sense.
And to anyone who says the core elements of the game and strategic value would be ruin if you could decommission units I say, no. It would just change that and add a new face to the strategic value of the game. From a general's standpoint this makes total sense. We have manpower tied up in row boats? Fire them! We need them over here on these cannons!
As far as getting resources back, not sure it matters, but a percentage makes sense.