MIAMI GARDENS — The acquisitions of new defensive coordinator Vic Fangio and star cornerback Jalen Ramsey are no doubt the marquee offseason moves that could help fix a Miami Dolphins defense that vastly underperformed in 2022. But much more under-the-radar and possibly not far behind could be the move to bring Renaldo Hill in as the defense’s passing game coordinator and secondary coach. Hill, a 10-year player as a safety in the NFL, including three with the Dolphins, jumps into this new role on the staff after gaining defensive coordinator experience with the Los Angeles Chargers the last two seasons. “Over the moon to have the opportunity to add a coach of his caliber,” coach Mike McDaniel said as the Dolphins wrapped up mandatory minicamp this week.