No, because if there isn't any variance, they can make it even more clear what the offense is going to do. See also: Brown, Noah and Whitehead, Lucky. It only works as you describe if you implement motions, shifts and tweaks week-to-week and depending on what opponents' defenses weaknesses are. The Cowboys have never shown any ability or desire to do that...it stands in opposition to the philosophy they've had for the last 5 years.
Injuries and penalties have absolutely 0 to do with introducing a new scheme. I'm open to the idea that the Cowboys can be this type of offense, there is just absolutely 0 evidence to suggest that they can do it successfully.