He is not good in LF as I stated early on last year when he fist came up. His offensive skills overrode his defensive liabilities and were probably never addressed by his coaches in college or the minors. He should be considered a candidate for 1B or DH as Morales has shown nothing to date.
If the Nationals were contending, I'd agree. Best case this year we go a bit over .500 and sneak into the playoffs, at which point I see no pitcher on this roster outside perhaps Gore I'd be confident in for a must win.
Give him another season in LF. Reevaluate next winter. If he can be an average LF and keep open DH, we're much better off than the alternative.
Performance of Hassell and Young will pay into this equation.