I like the idea. If a guy gets injured, gives up 4 earned runs, or reaches 100 pitches, he can be removed whenever they choose. I like that it keeps guys in the game that are pitching will, instead of just pulling them.
I really don't see much change as far anything goes. If a guy is pitching well in the 6th and his PC is not high, they usually keep them in anyway. Now they have to keep them in. I like it.
I would assume that this would be the end of the opener??