Armor Skins and Stats Modes
I believe this is what transmutation stones are for.
What if I want both looks?
This idea would make it so you have a easy access to all your skins of armor. Also, instead of being forced into a endless grind to get all the stats on all the looks you want (which clutters your inventory and bank), you would be able to choose which stats are on the skin you want to show.
Letting players look the way they want while adding a better item stat design adds to player involvement in the game. It also rewards players who do all content by allowing them access to all the skins they have discovered, without making that feat one of inventory space. Players may want to stay in a zone longer to get that last item in the set and not have to worry about keeping transmute stones on them.
Transmutation stones would become obsolete with this system, but transmutation zones are really just a kitten system that has a lot of room for improvement
Another MMO I played did this well, giving you two ‘outfits’ to start with, on top of your base gear. After that, you could pay to unlock up to seven and a wardrobe to store even more items in.
A system for those of us who like to change our look fairly regularly would be nice, but Anet love their transmutation stones too much.
The “outfits” thing is in the right direction. I’m not sure if I would want them to limit it at all. I think an exact copy of the dye system only with armor skins and stats would be awesome.