My suggestion is to make the World Completion percentage a magic find bonus proportional to the percent completed. It fits the theme of Explorer gear having magic find, and more importantly it may help a small bit with managing bots by requiring more time for them to ramp up a new character to full magic find efficiency after their previous character is banned. Assuming of course that you have a task force seeking out and banning bots, which I see no reason why you wouldn’t as their existence fuels the hated rmt trade. Plus it would be nice to have some sort of reward for world completion that is more feasible for a casual player to enjoy than the opportunity to grind their life away for a legendary.