I'd say most of us will agree that Usopp has been not relevant ever since the timeskip occurs. In that regard, will you say Usopp should have his last moments in W7/Enies Lobby arc?
Let's say, Usopp sacrificed his life here. I think it'd be impactful moment. First of all, Luffy would learn the bitter lesson on what happened if he couldn't control his anger towards his own allies. Second, this can be the moment where Luffy and Usopp reconciled and had their last moment. Then, the burial will be for both Going Merry and Usopp, that symbolizes Usopp's dedication to be with Going Merry until the end.
Let's say, Usopp sacrificed his life here. I think it'd be impactful moment. First of all, Luffy would learn the bitter lesson on what happened if he couldn't control his anger towards his own allies. Second, this can be the moment where Luffy and Usopp reconciled and had their last moment. Then, the burial will be for both Going Merry and Usopp, that symbolizes Usopp's dedication to be with Going Merry until the end.
