I would stick with Gore for a few reasons.
1. Depth at RB -- you don't have much behind your starters. I understand you only have to start 1 RB, but I'm not sure how comfortable I would be with Mendy as my RB1 through the playoffs.
2. For the future -- I think Rice is a stud this year and will continue to be... as long as Favre as in town. They have developed a great rapport. Rice and Jackson, not so much in '07-'08 (though in fairness to Rice, he had some injury issues). Would Rosenfels be better? Meh. The $64,000 question is... how much longer does Favre play? Maybe this year and next?
I see Gore as a guy that can be a feature back for several more years... even with your unique PPR scoring, I believe his long-term value is greater.
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