I think it would be a really cool thing if we could lvl up our gear and evolve it. lvl up can be achieved by achieved by using that gear. When gear is evolved you need two of the same gear and you go to the evolving building and it combines them into more powerful gear. When crowns gear is evolved you get much more powerful gear. here is some charts.
Bought gear= slightly better stats dropped gear= better gear dungeon boss drop gear= much better gear crowns gear= x1.7 original gears stats.
sometimes when gear lvls up/gets evolved it gets a new spell that beter than the first.
important: mastery amulets BOUGHT WITH CROWNS can be evolved into a double mastery amulet for 7,000 crowns. That's a total of 27,000 crowns (hint hint)