For what it's worth, season-to-date, including MNF last night, these calls are at 34 (vs 16 last season)
It's interesting that everyone was up in arms about the new helmet rule for pre-season, but that went away and now the new sack rule is now the talk of the town.
Personally of the sack rule calls I've seen a few have me scratching my head.
Goodness, for PIT @ TB last night, during Q1 the TB QB went to a slide, PIT dfender was called for a roughing - which was a good call but i seemed it should have been an ejection.