On thing that just occurred to me... going with the ultra shirt pen in favor of a large bench... good luck using that bench effectively, in game, without depleting your bullpen. Everytime you pinch hit for the pitcher's spot, you need another pitcher behind him. Better hope you don't go into extras in back to back nights.
And as I said before, Old Hoss, or even someone more recent- say Warren Spahn- aren't going to have 32, 34, 35, 36 perfect outings. That may have been the case when they got the '50 Pirates on the schedule a dozen times, but even the worst team in this draft is going to trump the '27 Yankees by a body length, at least.
I can certainly see the value of having 6 or 7 bullpen arms and letting them unleash hell over 1 inning, or 2 every once in a while, over a short pen having to pace themselves a little more to conserve energy for longer outings and worrying about a 2nd trip through the lineup.