Good thread. My ideal offseason plan has been covered in bits and pieces throughout the thread but I figured I'd put my wish list down in one place.
First, I'd exercise the 12.5 mil option for Ortiz. Is it an overpay? Possibly. But it's one year and he has shown that he can still be a productive player for this team. I am in no way comfortable with signing him past next season.
I would try to trade Ellsbury/prospects for Matt Kemp. Rumor has it he is not happy in LA and the guy is a legitimate five tool player. With the emergence of Buchholz I'd even contemplate giving up Kelly.
Let Victor walk and go hard after Mike Napoli. I'd be fine with a rotation of Napoli/Saltalamacchia at C, and if you can't re-sign Beltre they'd split time at first as well.
With regards to Beltre, I wouldn't offer him more than 4/48, I think he's due for a regression next season but I also think he can be a very valuable piece considering his defense. I'd be wary of exceeding that deal in years or dollars.
I'd go hard after Jayson Werth, as I think he is the RHH bat this team needs, especially if Beltre is not resigned. His defense was called subpar earlier in the thread but it's actually been very good until this year. As noted, the H/A splits are not concerning.
I think the rotation is set, you go to war with those five and hope that Beckett and Lackey bounce back. I keep Doubront in the pen and try to sign Downs/Thornton/Fuentes to round out the pen. As much as he's killed us in some games, I do not trade Papelbon and continue to use Bard as the relief ace.