Right now, each class only has one "set" for each class (excluding platinum/trash sets). I think that there should be at least 3 armor sets for each class for each campaign. For example some of the new operarive sets could be...

Set 1- Focused on crit and hit%
Set 2- Focused on dodge/regen
Set 3- Focused on damage/crit

Having multiple sets for each class would be great due to the lack of variety we have in SL/PL!