If you don't believe Espinosa is a long term starter for you as a switch hitter, you probably can use at least one additional lefty power hitter among 2B / LF /1B, and you may need two if you don't bring back ALR. They look very vulnerable to righty starters, and you don't want Harper facing two lefty relievers his last two at bats.
You also need a rotation piece. Haren might be a good buy low.
I'd jump on that bandwagon, but I thought Desmond was trash this offseason- hopefully Danny can follow a similar track