I agree that Cargo is still their best corner OF. He certainly doesn't need to move to 1B at this point to lengthen his career, because he's still a plus outfielder. But the reasons I am thinking about him at first base are twofold: they have a lot of young guys who will be pushing for starts in the OF and somebody has to go to make room for them, and I don't think the Rockies have either a short- or a long-term solution for first base (I'm not convinced that Bridich truly sees Desmond as a 1B for the term of his contract).

If they are going to go into the offseason looking for a splashy free-agent to play first base (which is just speculation on my part), then I think Cargo should be in that mix. As Coloradolite said, a Cargo/Reynolds platoon, with Gonzalez still getting plenty of starts in RF when he's not at first, might be worth looking into, and a soft handoff to changing positions might sit better with Cargo, too.