Well, there is one other thing to consider on UNID items. Some people, not myself, have been promoting the idea of a program that would tell you the actual hidden roll value of UNID items. Now, I am not a hacker, so I have no clue how true this is, but if it were possible that this is true then there are some folks who would have a very unfair advantage in selling UNID items.
My last thought on UNID items is to just ID them. Legendaries wont be getting buffed for a bit and set pieces I think are slated to remain the same. So worst case scenario is you get crapola and DE it something remotely useful.