I was playing Nevewinter and one of the things they did there was have a page that shows all the sets and equipment in the game, plus some other things specific to that game.
Quick example
http://images-cdn.perfectworld.com/www/f2/2c/f22c3dbfbad3a3beb14187520622feb61385434094.jpg
It would show the items and and a picture of what the whole set looked like. once you mouse over it shows their stats, where they are located etc.
Its only a minor thing but its something I would like to see with our sets. It gives you a perspective on what you have collected and where you need to go, or what you need to do to get the rest, while giving you a hint at what it looks like.
This could be extended to ships, unique equipment, possibly rare Doffs, pets.
Comments
At least until someone states that the Assimilated Space set can be found as DS9.
Our Battles
I know the wiki pretty much does the job, but you cant beat something that is there and in game. I wonder what percentage of people even use the wiki or know if its existence?
I agree with OP that there should be some in-client database of all available items and powers in the game.