In theory I think peoples items properties should be hidden while worn!
But sense like Gildar said they are already visible I don't see a reason why not!
Dont understand me wrong, but it makes a differences if you see ohh, mouse over a guy, this guy has only 15 dci for example. Or this one has only 60 cold resistance, in Trammel this might be make no difference, but in PvP this give us a too important advantage. If you have to go over each item, look calculate, it is a thing.
But iam also with you, the items of other players should be hidden like in 2d, i can mod this, but i think nobody would use my Interface
, so it has to be done from the dev side.