4-3 cover 6?

By the way, I have gone back and read your posts over the years on here. I think more teams are moving to a single high safety or cover 3 because no matter what zone you play, someone is going to have to cover man to man. So why not have them play it on a regular basis so they are good at it. Broncos did last year under wade and that was one of the best defenses ever.
There is an article about how the true cover 2 cover 4 cover 6 is being overtaken by cover 1 cover 3.http://mmqb.si.com/2013/09/25/bears-lions-preview-cover-2-endangered-species
If you can, paste the link above. Gives many ideas of how cover 2 is becoming a dinosaur in the nfl.