I would love to see Field-Ops return. I want the Elite Gear as well.
There are two kinds of secret agents: the E.P.F. & the P.S.A. You can join the P.S.A. by clicking the moderator badge in the upper-left corner and clicking on the chat bubbles icon in the subsequent menu. If your penguin is 30+ days old, you can join the P.S.A. as long as you answer the questions correctly.
I believe the E.P.F. works in a similar way. Upon reaching 30 days of age, you may enter the Everyday Phoning Facility and begin The Test.
Successfully completing the P.S.A. quiz or the E.P.F. Test will reward you with its respective phone. You can be both kinds of secret agent at once.