I'll bump this. I think we should have one of the following options for our prospect budget: either (a) be allowed to budget as little as we want and risk not signing any draft picks -- obviously not something to encourage given how easily it is to screw a franchise this way; or (b) transfer our remaining prospect budget without penalty, while retaining the current caveat that you must sign fifteen of your picks, and maybe an additional caveat that you must at least offer the initial asking price to any draft picks selected in the first and supplemental rounds.
I don't care that they make me sign 15 of my draft turds, but in a recent draft my top pick was #62 and my second was #131. After signing my supplemental pick and 14 others I still had $5.2'ish million in prospect money. I transferred the $4 million I was allowed to access, left two in the trash and another $1.088'ish functionally in the trash as prospect money with nothing but garbage to spend it on. Obviously I only care because I left myself a thin margin in player salary, but it still kind of bugs the bejesus out of me right now.