i did pickup radius instead of armor or str/vit on my ice climber. Just have to shudder to pickup globes in battle. Its for the globes not the gold imho.
This is the only reason I'd consider having any PUR on gear. Even then I prefer not to as it takes up a random modifier that could have been a defensive/offensive stat.
The problem with gold piles is they are too small in today's Economy. I would say increase the amount of gold but this would just make it even worse as the Bots farm more. To the everyday Joe you are not going to get rich off picking up gold.
Gold rewards need a massive buff in some way that bots cannot replicate. Eg: Resplendant chests, Unique Monster kills(The random ones only), Dungeon events(Full 100% clears), Speed runs(Point A to B), Random quests: Kill all Elites in specific "Area" in "time", Collect 10 peices of a specific white armor/weapon.
Think of dailys in World of Warcraft, some type of quest that is imposssible to bot. It can be done. Obviously it would need to be monitored. Remove all gold% pickup or have it work on rewards only.
Wow I could go on dribbling crap forever. But I have so many ideas, some great some not so..., that would be great if implemented in game.