I dont mind it. Itll make the game more exciting if it goes really deep. Plus the crowd by that time will be TIRED. Remember the playoff game a few years ago, Braves v Astros? WEnt into 19+ inning i think i remember. Lasted nrly 7 hours or just over? Not too sure on the times but it was long.
Adding that makes it last at the most 5 hours, as even me, who loves the braves, would get bored by then. Plus itll make it alot more tense at the end and get up a grandstand finish