Isn't he a good fit for Brook?
Because they look alike? No.
I hate this trash "they have the same type of hair, therefore they will fight" kind of pairing.
I like the OG BBP more than the Impel Down ones, but since Shiryu exists, it's a given he will fight Zoro. Lafitte is a vicious MFer that will probably almost kill one of the SH's, which is when Sanji will come to the "rescue thing". He's also my favorite BBP.
The "he's gonna fight Nami because they are navigators" is also an extremely dumb motive for them to fight. Are they gonna compete in a ship obstacle race or some "navigation pop-quiz"? Were Mrs Doublefinger, Khalifa, Absalom, etc navigators?
The Pizarro matchup due to Pizarro having connections to North Blue is actually believable.
I will start considering these "mirror matches" when people, instead of pairing Zoro with Shiryu because swords, start pairing Zoro with Vasco Shot because "booze", or Sanji/Shiryu because "invisibility". Until then, fuck these mirror matches. There are only 2 SH's that I think have some sort of theme with mirror matches: Usopp and Chopper. Which is why Chopper had a clash against Queen, for his hatred towards Queen's morals, same thing with Hogback. So I think Chopper has a thing for this kind of pairing, therefore I put my money on Chopper vs Doc Q.
Usopp because Usopp can't fight any other BBP without getting completely fucked up. I don't see any of them fainting from a jump scare. It serves as a connection to his probable confrontation against Yasopp, who was always praised due to his marksmanship skills. Van Augr is introduced sniping some birds way past the horizon line.