As much as the NFL is known for being a copycat league, don't expect a pattern of teams winning Super Bowls with backup quarterbacks. Philadelphia's title run with Nick Foles filling in for an injured Carson Wentz is an outlier.
The most likely path to a championship is building around a franchise quarterback.
If the current group of Cowboys are going to reach a Super Bowl, Dak Prescott has to play well.
To improve the chances of that happening, Dallas' top offseason priority is making its offense more "Dak-friendly."
There are several ways to achieve that goal, but a good starting point appears to be studying the Kansas City Chiefs and Carolina Panthers.