I will never repeat this enough times : DCUO style system.

Every time you equip a piece of gear its "style" gets added into a style tab and then you are not forced to keep the actual gear you want to display. Just select it through a menu serving this purpose.

Extra stress on servers you'd say ? Pffft, DCUO is on PS3 as well and handle its 500+ different styles perfectly fine. So why FFXIV couln't handle hm... 30-ish ?