Quote Originally Posted by HEC View Post
Well it's not har to slap the icon there, the "hard" bit is to have a system to keep track of all of it at all times which takes indeed game resources plus development time.
Development resources, sure, but it shouldn't take game resources. The system already knows when a gear set is missing one of its components. In other words, your items are already flagged as belonging to a specific gear set. All that's left to do is give the gear icon a 5x5 flat color overlay to make this flag visible to the player. They already have the overlay system in place to display materia slots so that's not an issue either.

It's likely one of the more simple things to do, it just isn't high on their priority list. Personally, I agree that a pop-up when selling them and a small gear set indication overlay - even if it doesn't display which set the item belongs to - would be great. But there are probably more pressing matters when it comes to the interface right now.