The Cubs' attack was awful in 1999, and there is no reason to expect a major improvement in 2000. The new catcher is apparently Joe Girardi, signed to a ridiculous three-year contract. It's hard to believe, but the Cubs actually found a catcher who is worse than Benito Santiago. Jeff Reed is still around, but he was part of the problem last year, and at age 37, it's doubtful he'll become part of the solution. The Cubs did upgrade at second base, replacing Mickey Morandini with Eric Young, who gets on base at a much better rate and can actually hit the ball out of the infield occasionally.
Third base is a wild card.
The current plan is to split time between Willie Greene and Shane Andrews, who both have considerable power, but erratic track records. I think Greene is the more talented of the two, but the Cubs seem to have a thing for Andrews. Even if the combination hits .240 with 25 homers, that's more than what the Cubs got from the position last year. Consider it a mild upgrade. Shortstop, like catcher, won't improve and could get worse.