Originally Posted by m5kwatts
The Texans offense isn't designed to allow audibles. The first 15-20 plays are scripted to begin with. And in the Denver ZBS WCO offense, each play called is designed to affect the next one. So two runs for 3 yards may look like failure, but it is called with purpose to set up play-action down the line. Allowing audibles would defeat this purpose.
I think having a design for each game offensively is fine, but I think that allowing one of the top passing QB's to be able to audible out of what looks like a potential sack or broken play would give the Texans offense some elasticity and not be so predictable.