I have always wanted to make a game that is entirely text based, where you play as a commander sitting in his armored command vehicle, and all you have is a map of the area, and a radio, which you must use to contact your units.
They will occasionally report things by themselves, for example when they spot a vehicle in the distance, or hear a jet flying over their head. More experienced units will be able to differentiate between enemy and friendly vehicles and report only enemy vehicles to reduce the amount of data you have to deal with, while unexperienced units will be slower to report anything, and their reports will be lacking in detail. Instead of reporting that they can see an enemy T-55 bearing 247 350 meters from their position, moving towards them fast, they will panic, then report that there is an enemy tank coming towards them.
Units will also report landmarks they can see, however inexperienced units will not do so automatically.
You can order them to move a certain distance in a certain direction, or tell them to move towards a named city, but inexperienced units may have navigation errors and move too far, or too little, and maybe in a slightly wrong direction. So when you ask them where they are, they will say they are where you told them to be, but in fact they are 100 meters off, not on top of a hill, but in the next valley.
Good or bad idea? Keep in mind that, even if I start development soon, it may or may not be
A: shit
B: entirely console based
C: no more than a "tech" demo with shitty coding
D: made entirely in C and command line based.
Maybe it's going to be a naval game at first, since that removes the need for a map and it will make things a lot easier to deal with.
I should probably take this over to the /agdg/, but I wanted to post it in here, since this thread appears to have some people that may have some ideas for me to add.