Burning Wheel does this and I absolutely love the system. I liked how if you failed your wealth check, your score was lowered for awhile. You could also increase it like any other score with enough success of difficult tasks. The way all the various subsystems in that game interact was superb.
I do think you lose out in an abstract system though. Delving for treasure in a dangerous dungeon was most the appeal of the early RPGs. It's not quite the same rush discovering a horde that then gets abstracted away