Teams must sign their skill position stars at market price. So they skimp on useful veterans in the trenches, and pick the cheapest available guys as backups at every position. In every team sport, superior depth has been the hallmark of dynastic champions like the Yankees, Celtics or Canadiens.cw0 Given football's medical attrition rate, depth matters even more. The Rams are champs because unknown backup Warner had the finest season by a quarterback in league history. That's catching lightning in a thimble.
Most backups stumble whatever their position.
They were hired on the cheap, and teams get what they paid for. If the Rams repeat, call them a dynasty for the 21st century. There will be an NFL season without a knee injury before there's another NFL Team of a Decade.