My apologies if this is a big long... I think it might be.
Looking at the 2008 roster, and assuming no major trades of people like Berkman, Lee, Pence or Oswalt:
C:see below
1B: Berkman
2B:see below
SS: Everett (No I don't think A-Rod is even a remote possibility)
3B: Wigginton (as much as people like Lamb, he is probably better overall)
LF: Lee
CF: Pence/Addition
RF: Scott/Pence
So from a position player outlook there are a couple of things that need to be addressed. First and foremost is can they get a Lead-off/#2 type hitter. While this doesn't specifically address the defensive holes, it is the first question that needs to be answered for this team. You have to have stability in the top of your line-up to be a successful offense. Pence is OK at leadoff this year, but I think he would be a better #2 hitter if they can find another good option at lead-off... sounds like the same issues this team always had with Biggio leading off, but I digress. To me, the team needs to check in on Philly again. They have a couple of guys who could fill the bill as lead-off guys, but this would push Scott out of the line-up. I support the people who would like to see Scott be given a full season, and not have the rug pulled out after a bad month or so. He is pretty capable at batting in the 5/6/7 slot, not great, but doesn't suck either. But if it means getting a real CFer (not that Pence isn't trying), one who can lead-off... well I think that would be the reason to bump Scott to the bench. Barring that addition, there is ZERO reason to not give Scott 500-600 ABs in 07 in RF.
OK, now moving on to the holes I mentioned above. At Catcher, I just see the club re-signing Ausmus. I think there was a chance this would not be needed had Gimenez not gotten hurt this year and had a year to learn from Ausmus. But he did and he wasn't able to. So Ausmus is probably the best thing they could add at Catcher, even if he is moved to a back-up type role. Then comes down the choices to be the regular/split catcher with Ausmus: Gimenez, Munson, Quintero, Towles. I am going to throw out Towles just on the principle that he SHOULD get some more time at AA/AAA before being thrown into the fire. Munson is probably the best hitter of the bunch, and has improved behind the plate. I think the club has come to the conclusion that Quintero is a AAA/AAAA player. So I expect the battle for the other catching spot to be between Gimenez and Munson. Personally I think there is less than a 1% chance the team keeps a 3rd "catcher" type. So take your pick on who you think fills that role.
2B is more a question. The team would LOVE Burke to take that job. So far we have all witnessed him pissing that away. Even so, I think unless something falls in their lap (I think Loretta is leaving via FA), he is probably the opening day starter. Conrad in AAA was the primary 2B, IIRC, and he was not impressive. Ransom will likely be on the bench, but I am not sure his talent for 2B. And Bruntlett seems the only other candidate who would be likely to win the job (in house). So barring a trade for a 2B, which would be really nice if they could get one who could lead-off, I see Burke starting at 2B. No this doesn't make me happy, just seems the most reasonable.
I see Lamb and Loretta both being offered arbitration, but I think both leave via FA. I love both players for the roles they play, which to me is Lefty bench hitter and solid 3rd Middle Infielder who has a contact approach at the plate. I just think they will get better offers elsewhere. If I could keep only one of them, I would make a play for Loretta, whom I think should be batting #2 not #5 in the line-up when he plays. He would be a better fit at 2B, but eventually the team needs to either find out what Burke can do as an everyday player, or get rid of him.
So I see a final line-up like this:
C: Munson/Gimenez & Ausmus
1B: Berkman
2B: Burke (maybe Loretta)
SS: Everett
3B: Wigginton
LF: Lee
CF: Pence/Bourn?
RF: Scott/Pence
Bench: Ransom, Bruntlett, Lane, Anderson/Scott/FA
This gives you 13 position players. Which would allow for 12 pitchers, since so many seem to be going this way. If Loretta is kept along with Burke, I could see 14, or having Burke fill that last bench slot. I will write another really long post about the pitching staff later.
And just for laughs, if this is the line-up here is where I think they should bat (not that any one cares):
Burke
Pence
Berkman
Lee
Wigginton
Scott
Everett
Catcher