First of all, I think the "save your closer on the road" rule is only common sense. You're most likely only going to get one run, so you need that good pitcher there. That said, the best way to leverage the extra-inning situations is to have a guy or two capable of doing what Chris Barnwell and Johnny Raburn have done in the Brewers farm system: Pitch an inning or two on occassion and provide a somewhat better bat than you would normally get from a pitcher. If I can have a guy who can do that on my bench, it's an extra edge. In essence, one of my bench guys is more like Toolshed Kieschnick.