I'd say locking into "starting pitcher" rather than role would be better. Allow players to switch when they bring in a new pitcher. The biggest issue with flipping every inning is if you come in every other inning and the pitcher's confidence is shot from the previous inning isn't fun. Also bringing in your teammate to close out a game would be a fun element. As with everything though, choice is king. If you're wanting to stay with the inning rotation, let it be an option.
JHebert03_MLBTS
@JHebert03_MLBTS