Manfred is OUTTA CONTROL
Actually seriously while this idea feels gimmicky, it's not really any more so than the 3 on 3 NHL overtime. I can see the point in trying to end regular season games in some way so the fans that attend can see some kind of resolution without having to stay to all hours. At least it's not the baseball equivalent of a shootout, which I guess would be a homerun derby.
Problem is, if you start with a runner on 2B, it's going to lead to a lot of sac bunts and IBB, which are boring.