The issue with this thinking is the 1 seed doesn't necessarily guarantee you more Miz home starts in the postseason. For instance, if the NLDS goes to 5 games like last year, with Miz presumably pitching game 5, the earliest he's then available is a game 3 in the NLCS which would be on the road with HFA.
Plus, Dodger Stadium has not exactly been a "problem mound" for Miz. He's shoved there in his appearances both in the regular season and the postseason including just a month ago.
So, that still leaves me not caring whatsoever about HFA....