Identify items when they are in a Gearset

Well this is pretty self-explanatory. When it comes to selling gear from the armoury, we can't know which piece of gear is currently used by one of your classes.

I would like to have something that shows me what is in a gearset so we won't be selling it for nothing. Sometimes we even have many of the same piece of gear, it can get pretty confusing.

In addition, it would be useful to be able to put a mark ourself on gear, a icon that would display in the description that could help us even more sort our gear and don't sell what we don't want to sell.

Same here, it need at least an alert or popup to prevent when trying to sell something already equiped on a different class. Error can happen so fast.

And also when they are not used in any set! Maybe like a faint glow or outline.

I concur. Hopefully we can see something like this implemented at some point - I've accidentally assimilated a few pieces of rarely-used gear.