I agree with this. I think Ludwick's done his duty of carrying a heavy load since Votto went out, but he needs a bit of a break.
If Frazier rotates in as 2-3 days as 3B, 1-2 days as LF, 1-2 days as 1b every week for the rest of the year, I'll be happy enough. (This likely leads to 5 starts in 6 games, with an extra day off every week.)
In the playoffs I'm guessing he doesn't see any time at 1B, but I bet he plays 3 out of every 4 games. Given how well Ludwick and Rolen are hitting to this point, I don't think anyone can complain too vociferously at each of them getting one game off and one player getting two out of the four.
He'll play.