Well I think a large part of the issue is they feel no real need to go back to those designs. The Argus and the Thanatos both come from one of the less-well-regarded TROs, from a volatile time in CBTs history. I like a great many of the 3067 designs, but it's hard to argue that any of them are considered "classic" or even overly popular designs. Unfortunately, like so unfortunately many of the post-3050 designs, the Argus and Thanatos are getting no love.