Did the users say it was poor?
You can add another 100k or so Reuters terminal users on an equally obtuse UI. A good UI meets the users needs and does this well. I submit that both the Blomberg and the Reuters devices do this and are therefore excellent interfaces. Having suffered through six designer instigated revamps of the MS Windows UI only reinforces this opinion. My first task with a new Windows UI is to make it look and act as much as possible like Win3.1.