nah, the money's the only thing fixed. materials stay abundant, that's the whole point of it. if every rock's scarce too it's just a survival sim and you can't tell the money did anything
yeah time's the one input you can't just spawn more of, so gating hiscores on it is the right call. it's basically proof of work with a leaderboard, latecomers can farm rocks all day but they can't buy back the early ticks
so you’re proposing fixed supply on materials too huh