The game has potential, but for sure it needs some additional things. For example after making some coins and expanding production to huge amounts the game is pointless. Making more difficult to gain something more will be good to it. For example you can expand machine placement a bit for a huge amount of coins (& start with smaller space), add/remove machines for coins, and for sure when you delete a machine you shouldn't gain 100% resources. 50% or 0% can be OK here too.