Not sure if we're talking about the same thing but it seems Dom just doesn't like to show blitz in general. He'd rather blitz unexpectedly than drop into coverage unexpectedly. Maybe he doesn't think our guys are fast enough to hustle into a passing lane from the line. Maybe he thinks they aren't explosive enough to do damage without a head of steam. Maybe its to compensate for how slow developing the coverage can be in a zone blitz. Dunno.