I saw a post a few days ago where the poster put the idea of sets of gear out, and used Diablo as an example.
Well, I hope that person reads this, because his wish has been granted (much to my pleasure):
We have tasked one of the systems designers with doing nothing but making loot better for the duration of Season 3. He's already on it and making new items for loot and gear - including sets of gear!
SOURCE:
http://forums.startrekonline.com/showpost.php?p=2898677&postcount=2