I like the Blue Dogs, but I actually would have liked to see them in coalition with Republicans, maybe with a Blue Dog elected Speaker of the house in a narrowly divided House with Dems having a small majority. We still don't know what would happen if the Dems had only a 5 to 10 seat majority in the house, but if and when they win back the House, its likely that some of the new Dems will be Blue Dog types I would think.
If they did that, they should be considered treacherous. They are still democrats, and democrats are their base (see Parker Griffith).