Re: Why the Texans were unable to go deep on Jax
Lots of coaches in NFL history have played their cards close to their chest and kept certain plays out of rotation until later in the season.
I rember seeing Bill Belichick talk about Bill Walsh and Tom Landry planning things like this, which he does, as well.
It's a simple concept. Don't show more than you need to show. If you don't need to reveal plays to beat lesser opponents that you are dominating, why do it? It's a tactical advantage to always keep something up your sleeve.