Adam Dunn is not a completely crazy move.  If you look at his stats (for the money you would give him), he offers some pretty good production for the buck.  He does strikeout alot which may not be what you want for this particular lineup.  Also, Dunn doesn’t play CF.  I don’t know how that solves the centerfield problem unless you know you can spin him off to a team that can offer you one.  Dunn – coming off the bench?  He’s been a starting player for several years now, I can’t imagine that he would want to play in that role.