@scott_pilgrim: "Why would you want to spawn a treasure chest?"
A: As said, you can make a deal with others. But perhaps more often, you can put it in a location not reachable by anyone else in one turn. I think this is possible fairly often, except when you're clumped in the middle of the board, and this rule was meant to provide incentives against clumping. For example: you can make a TC in C13 in your turn, and move 2 steps towards it, and no unit on the board will be able to get it. If you want I can add a clause that newly created units cannot pick up treasure chests on their first turn, so that the treasure chest will be guaranteed to be yours (barring rule changes). Maybe that's a good idea, especially if we will be able to place more than 1 unit on the board per player.
@Jimmmmm: yeah, maybe adding N$100 to the system is a bit much, but I want that the starting amounts of money isn't worth that much. For example, under the current rules we can survive for 100 rounds without getting any income, which will take years. So yeah: some new expenses need to be added, but that should be done even without this new income.