Except in the case of the #10 pick, there is no 'do over' so it might make sense to tread cautiously into the draft eligible sophomore pool (Kentrail Davis or DJ LeMaheiu) given the fact they can head back to college for their junior year. Additionally, assuming that Strasburg is the choice at #1, I can see the Nationals shying away from a player with a huge price tag. Every team has a draft budget and I am not sure the Nationals are ready to devote $16-18M+ to two guys. That figure alone is bigger than most team's total budget.
You just have to throw more money at them than they could reasonably expect to get in the future. Give them a real dilemma. Make them ponder: "If I don't sign now, I might get much less than this in the future."
They still have a low ML payroll, so I don't see why this can't happen. It doesn't even really hamper future negotiations because of the context. Future picks can't use it as negotiation leverage unless the same circumstances come up.
