Toz mentioned the idea of crowdsourcing ideas on what people would spend gold on in game; that's a solid idea, and an opportunity to discuss, hopefully, without devolving into personal attacks and craziness. The sentiment of there being nothing to spend gold on is a pretty common one, so what would you spend yours on if you had the ability to?
BIG HUGE CAPITAL DISCLAIMER: This is not a promise that these things will be done. Consider this very much like the artifacts thread in that these things will be read, but there's no guarantee that any particular idea(s) will be implemented. This is mostly an experiment in idle curiosity to see what you guys would be willing to trade your Scrooge McDuck status for.