Don't you think this will be a great idea, that everytime we are wearing matching sets (helmet+armor+weapon), we get an added boost (stat). I haven't played other MMORPGs, therefore I can't compare, however, I played Torchlight (not the multiplayer online version), it has the matching gear boost.

I've always been fascinated by the warrior matching gears:
Juggernaut
Berserker
Demonlord
Founders
Forerunners