Look, the bottom line is that no smart GM would possibly just allow his team to go into the season with guys like Guyton, McGowan, Butler, Wilhite, Brace, et al and just expect them to get better or contribute more or be better leaders. The smart GM would go out through the draft, trades, or free agency and find dependable players to fill those holes, and then if the said rookie develops or shows more promise, then you have a surplus of talent, which is a good thing. But just throwing out sophomores and expecting them to get significantly better when you're trying to win a Super Bowl every year is a recipe for disaster. That's what the Chiefs might do, but not the Pats.
You can only expect to get throttled (again?) by the Ravens, Colts, Jets, and Chargers if you try that route.