He won't win 300 in Washington, but the Nats are getting much better in a hurry. They are loaded with young talent. Hell, the face of the franchise (Zimmerman) is still only 26. Bryce Harper is, what, 18? Ian Desmond is in his second year, Danny Espinosa is a rookie, Wilson Ramos is another young guy, Jordan Zimmerman and Drew Storen are both young guys...plus you add in some of the strong talent they've drafted in the last couple years still working their way up through the minors...
The Nats may not consistently challenge for the NL East in the next year or two, but they'll win 80+ games in a season in the very near future.