The roster looks pretty set for 2014 except for 2B and C. I don't see any moves being made at catcher, I think that JPA is set to be a defensively and offensively beow average player for another year or two until Jimenez comes up, fingers crossed.
Leaves the question - who plays second base? I personally don't think that Izturis or Bonifacio are really everday players but they would look really good on the bench - Thole, Izturis, Bonifacio and Davis looks perfect imho.
Looking round there I think that there are 2 decent Free Agents and 2 possible trade targets.
1. Robinson Cano (FA) - perfect but not coming here. Yankees and Dodgers will back up a money truck with a 10 year contract attached. Whoever gets him has done really well for the next 6 or 7 years then regret will set in. Not coming here
2. Chase Utley (FA) - or, more accurately :The Ghost Of Chase Utley". Chronic knee problems in both knees since 2011 have limited him to less than 100 games per year since then. Sounds like an awful idea or the concrete and would surely demand a long contract, seemingly because his name is Chase Utley and he was fantastic in 2010. No thanks, too high an injury risk
3. Rickie Weeks (Brewers) - good player, signed with a vesting option through to the end of 2015, around $11M per year. Milwaukee is rebuilding and has an almost ready prospect in Scooter Gennett who has been playing this year but isn't hitting well yet. Whether Milwaukee see Gennett as a future everyday player will determine whether they would let Weeks go for a reasonable deal or not. Nice medium term solution but price may be too high and would Rogers commit to another $11M per year?
4. Jose Altuve (Astros) - a notch below Weeks but still a decent player, enters arbitration in 2015 so is under team control through to the end of 2017. Houston's ~4 prospect is Delino DeShields Jr who is miles away in A+ but looks nearly ready to move up to AA. If Houston have faith that he'll get to the everyday level they could trade away Altuve but would want a good prospect for him and would probably rather wait another year. OK long term solution but price would be high
Overall I'd like Weeks but that would take a good prospect or two to swing and you'd have to convince ownership that the extra cash would make a big difference.
Have I missed anybody?