Does not getting paid matter (and how do you make it matter?).

[Roomba]

The biggest issue with money: the more valuable it is, the more likely it is that the HOP will transfer the entire station budget into his account at roundstart, set the pile of money on fire, then ride away in an escape pod while flipping off the crew.

There are other balancing issues that have to be addressed before money is useful for anything other than flavor, but this is by far the biggest one.