This was looked at back in the 50's by space boffins to try and get (and keep!) the intrest of the military in space and space programs. Before Spunik the US had very little intrest in space and space programs and someone came up with this idea to try and get some more funding.
It was worked out the cost per launch, and the minimal amount of equipment that could be carried due to space / weight reqirements ment that the program was never looked at all that much and shelved pretty quickly!