Completely random thoughts so please don't blast me as I usually suck at these sort of things. With Pujols gone and Fielder more than likely gone I think now is the time for the Reds to capitalize on the foundation they have (Votto specifically) and make a run at it. Atlanta is said to be looking for SS/OF plus for Jurrjens and Tampa Bay has made it known they are interested in Alonso.
How about the following (may be too little/too much)...
Cozart/Heisey/Wood for Jurrjens
Alonso/Grandal/Volquez/Plus for Shields/Upton
Salaries should be close to:
Jurrjens - 5m (Arbitration)
Upton - 6m (Arbitration)
Shields - 7m (Under Contract)
This would be a lot of money to take on for the Reds, but now is as good of a time to do it as they'll have in the next couple years. Also, they'll be getting 2 supplemental picks for Hernandez and Cordero so losing some of the "depth", prospect-wise, wouldn't kill them too bad.
They could then do something like Cody Ross to fill the 4th OF spot and Ronny Cedeno/Ryan Theriot to fill Cozart's spot.