The rotation ending the season is Strasburg, Scherzer, Gio. It makes me wonder if they are thinking of starting Strasburg game 1. It would be a bold move, but Strasburg has been the better pitcher the last 6 weeks.
Given how much time off there is between the end of the season and Game 1 of the NLDS, how the rotation ends the season shouldn't matter.
What would be bold would be starting Strasburg for Game 3 in Chicago and letting Gio have Game 2 at home. Their home/away splits would match up perfectly with this. Plus you would have Strasburg available out of the pen for Game 5.