#oh Usopp's suggestions aren't good either btw. they sound cool to him (and Luffy and Chopper who were his brainstorming buddies for it) but

[camels-pen]

Usopp briefly needing a high vantage point, so Sanji launches him into the air with "Armée de L'air: Darling Shoot!"

Usopp is not pleased with the name because it doesn't sound tough enough. (Also maybe this is something they've practiced a few times on the ship. It's uniquely suited to them because Usopp is long ranged and trusts Sanji to catch him after. Also, Sanji is very used to catching, launching, and kicking Usopp, so he knows what works and what doesn't)

(this doesn't work with the others consistently because either they don't want to/fighting style doesn't fit with it, they know Sanji won't bother catching them, and/or Sanji himself does not want to launch them if he doesn't absolutely have to [Zoro; he is fine with that])

(alternatively, this works just fine with the others, but Sanji wants it to be his and Usopp's 'thing' unless absolutely necessary)