With the NFL offseason winding down, teams in the league are reflecting on their roster changes since the Super Bowl. The Denver Broncos received an 'A' for their additions, including tight end Evan Engram and cornerback Jahdae Barron, while losing minimal impact players. The Kansas City Chiefs earned a 'B+' by retaining key players like left tackle Trey Smith and adding quarterback Gardner Minshew, though the loss of Joe Thuney raises concerns. Meanwhile, the Las Vegas Raiders also secured a 'B' grade, bolstering their roster with experienced names such as head coach Pete Carroll and quarterback Geno Smith, but questions remain about their long-term strategy. Lastly, the Los Angeles Chargers received a 'B' for their balanced approach, acquiring notable players like offensive lineman Mekhi Becton and re-signing wide receiver Mike Williams.