just thinking on the fit. so good in multiple coverages...inside/outside...zones/man. Marlon and he mixing inside out. Marcus and he covering thirds with Marcus Williams in the middle and Marlon chasing..perhaps Brandon or Ardarius covering in nickel...both with versatility to play safety roles.
Was initially of the mind that I preferred Booth but McDuffie is a better pure corner to me and plenty physical
i still probably prefer booth with his length and physicality reminding me of marlon along with the athleticism
but mcduffie's pretty great and he adds value to one of the few things we know about mike mcdonald's defence which is that he loves the idea of being able to show one coverage pre-snap and then present a different one post-snap without necessarily just being some sort of match and mcduffie is already good at and allows a defence he's in to continue to be good at disguising coverage
he mostly played LCB at Washington but he definitely projects well inside like you say and has that positional/matchup flexibility
i think adding him to a DB group that already has marlon and brandon stephens allows you to be so versatile and matchup-oriented with your snap-to-snap assignments - mcduffie definitely has more to offer than booth in that sort of dynamic