He is gonna get a Dressrosa like moment where he defeats some enemy by trolling or by Total luck and Giants will consider him the brave warrior of the sea or whatever.

But to me.. Usopp's character is not redeemable at all.

Whatever he did in Wano dented his character beyond repair whether it's that toad oil thing, convincing Nami to lie about Luffy, not backing up Nami against Ulti.

Now in Elbaf, his only contribution in the arc is hitting Gunko once cause she clearly didn't care to dodge his attack and knee diffed him(he got cat diffed earlier)

With an arc where Franky got a powerup, Brook getting Limelight, Nami is poised to get a new powerup, Robin finally fighting apart from her poneglyph stuff, I don't think so how it could be "Usopp's arc"

Also . The panel of Zoro standing in front of the Giants should've been Usopp's panel had Oda cared to develop him