I think more people would watch if the total investment of time per game was 2 hours tops; now a game routinely lasts more than three (or even three and a half) hours.
I don’t associate patriotism with football, but agree any issues should be low-key.
If they decreased the playing time that might actually help parity for teams that can't afford to buy a deeper bench.. I kind of lost interest in the NFL. I am not sure that would get me to watch. I'll DVR a game from time to time, but never watch.