Tamalak wrote:since people won't harvest a resource just for the hell of it any more
Maybe a few more resources need decay timers on them, then. Most get picked and used pretty fast.
Even without the timer people didn't bother harvesting brimstone. Matches and siege engines are the only use for it. Make good quality matches, and use braziers as a "local fire source" (because who doesn't have way too much charcoal?), and matches last forever.