David Frietas had potential. Seeing Suzuki quite often play, the Nats acquired a weak hitting, weak armed catcher. He averages about 55 RBI for a YEAR and ~10 HR's a year. He doesn't have a strong arm.
Not a good trade for the Nats.
Frietas was young, but Ramos (24) and Leon (23) give us options at catcher going forward. Suzuki gives a probable starter atleast this year and next. You stockpile in the farm system so excess prospects can be used in trades.