Congrats. You just turned "grind" (already not fun) to "worthless grind" (since gain will be nullified, even less fun is to be had).
Tell me one... ONE... game that *benefited* from having worthless grind to it.
You know, it's just your opinion on grinding as a mechanic.
Maybe OP likes to grind stuff and he would like to have that in the game. I myself really like grinding. I couldn't say why though, hahaha.
But still, I don't think any form of grinding has it's place in DOS. It doesn't fit the game.
Having stuff to "refill" parts of maps would be great though. If justified correctly. Like the events proposed here.