The Coin dilemma is interesting, isn't it? Inno uses the limited storage of Coins to force play into specific directions...in some instances, this may prevent players from misunderstanding priorities and getting stranded somewhere without having progressed via Coins. For players who want to have maximum personal choice, this can be frustrating.
As you progress, you'll have less choice and more of this passive (not so passive! lol) structuring. This has been the focus of a few threads here and in Beta, since Inno introduced game changes mandating certain new processes.
Personally, I think it would be fun to have as the game matures. They're unlikely to make it available to early players, but it could be a later addition. It's a unique idea, too - nice thiking!