It makes sense to deal our minor league pitching. Again, our window is open for just 2 more years. We're rebuilding in 2019 anyways. Accept it, it's happening.
For next 2 years, you have:
Scherzer
Strasburg
Roark
Ross
Gonzalez/rotating 5th starter
Turner
Eaton
Murphy
Harper
Werth
Rendon
Zimmerman
Norris
P
That is a...great lineup and rotation.
The lineup is still problematic, but I agree with your reasoning.
The trade isn't the best, but it makes sense given where the Nats are.