I'd say making the traditional 4th and 5th spots in the rotation a merry-go-round is fine provided nobody seems to be stepping up their game. It looks like Davies and Chacin have their spots nailed down. Great. After that, we are still in search mode for those other starting spots, and I think it makes perfect sense to use a combination of Anderson, Woodruff, Peralta, Gonzalez, and Burnes (and perhaps Nelson later in the year if need be) for those spots. Ideally, at least one guy steps up and solidifies their spot the way that Davies has done this year. Heck, maybe 3 guys will step up and we'll have a traditional 5 man staff. If that happens, let it happen, but don't force guys to struggle through the 4th and 5th inning when you have another capable multi-inning guy in the bullpen. That's exactly what they're doing now. You don't need tandems, piggyback, swap starter and long reliever every week, 4 man rotation, 6 man rotation, or any other novelty mentioned here. You can do some of that in September for specific reasons when the roster expands, and the make-up of your pitching staff at the time. This whole concept of blurring the lines between starter and long reliever is nothing more than making relievers feel better that they're not a starter.