This concept sounds really appealing to me. I feel like it could work like Kethan and Karbonite, you could have Scansat search for the "Koins", Although perhaps having them as form of geological surface sample would be more appropriate, Then set out on a mission to go recover this type of "resource" Thus giving more use for rovers or general EVA exploration also making "collect surface sample" less mute. Of course you could also just practice your targeted landing. Just like with other resource mods, you could have specific cargo bins to store the koins, i do like the idea of only having a limited amount to carry as EVA. And then once you recover you must take it back to KSC in order to sell them. This idea could also be incorporated into contract, but might defeat the original purpose, where you are assigned to collect X amount of "koins" from eastern crater of mun. I think it would be pretty nifty to include some sort of catalog GUI to keep track of where you have collected from and prices and such, make it playable for sandbox. I know the RnD archives does something similar but for some reason I am not a fan of that system. I honestly would not be too concerned with the actual value of the "koins" whether be funds or science, I would be more interested in actually going out and recovering them, I suppose very similar to the survey reports but with a little more added game play. In my opinion, this could extend the game play of setting up bases. Hope all this makes some sense, my thoughts kinda were running way too quickly.