The thing i fear is when Luffy fights Akainu, Oda would write him taking dozens of blows given how Oda writes Luffy fights with his plot endurance and that would be a pathetic sight to watch.
I think Oda envisioned this fight in his head and he thought to himself, how tf am I possibly gonna have Luffy not get folded against Akainu, and he came up with all of these ranged methods of contact. Having FS is another layer as well, we already got a sneak preview of him about to clash with Mihawk, only to realize he's losing his arms. All the shit Luffy has in his arsenal now means he can actually tango with one touch kill characters now. Imo we are definitely not gonna get Kat vs Luffy, or Kaidou vs Luffy type of battles. Majority of the fight will be Luffy avoiding taking critical hits. Sure there will be an insane feat or two where Luffy powers through being maimed, but there's only so many times you can use that in one battle before it loses its impact, besides those few moments will add to the brutality and struggle of such a fight. Like I said, fundamentally Oda is cornered.