The goal is do their best to pretend like they have a championship team while they made the move for Rodgers. Fitzpatrick, while their best secondary player, has fallen off the last couple of years from impact plays, and safety isn't as valuable as corner, and adding Smith adds a potential weapon on offense where the cupboard is a bit bare.
Ramsey and Fitzpatrick could wash out for them depending on what they do at S.
If Tua became available, I think there would be a heavy market for him. He's a player you can win with. He probably can't win it all, but he's better than a lot that's out there.