Aside from the Moises game against St Louis in 2003, I can't recall off-hand any time that I really wish replay were instituted for such plays. I'm sure they happen, but the ump gets such calls wrong rarely enough that I don't see it really being an issue whether it's reviewable or not. As far as the homeruns, I guess it couldn't hurt, though I imagine this is only the beginning of a slowly growing presence in the game.