We’ve debated this one ad nauseum, but Mark Sheldon’s piece on the starter/reliever question for Raisel Iglesias is here:

One of the offseason questions the Reds must answer is what type of role pitcher Raisel Iglesias will have: starter or reliever? And if he winds up in the bullpen, can Iglesias be their closer?

Iglesias already knew what his vote would be as the 2016 season was winding down.
“I prefer being a reliever,” Iglesias said via interpreter Julio Morillo. “I feel very comfortable right now. I’ve enjoyed pitching from the bullpen.”

Not a whole lot new here, but Sheldon did look at the question in the context of what we’ve seen in the playoffs, with some managers using their relief pitchers in a manner to which modern fans are unaccustomed (notably Kenley Jansen and Andrew Miller).

I don’t really have much to add, since we’ve talked about this issue a number of times, such as here and here and here and here and here and here and here and here. We think Iglesias needs to be starting if his shoulder can handle the workload, full stop.