This is literally two years later, but I just found out about this game, and, while I haven't run it, it seems like something very abstract would work way better.
I would actually just steal the whole Burdens /Drives/Hoard mechanic from Trophy Gold and slap it right into this game. Burdens are obligatory money sinks, like rent and bills. Drives are some grand goal or motivation the character has that requires a ton of money, where accomplishing it means your character has "won" and no longer needs to dungeon delve anymore (and conversely... they are driven to continue doing so until they fulfill their ambition or give up on it). Hoard is the savings going towards fulfilling that Drive. I think that would add a lot to the game, honestly, so that players have a reason to risk dungeon delves and push themselves for loot within the dungeons to fulfill both their short obligations and long-term aspirations.