1. You're talking about Chu? Chu was an enemy he could beat so he had to find the courage to fight. Trebol was an enemy he couldn't beat, so he had to take action despite that. And unlike when he returned from Arlong Park, again, he did it without talking himself up.
2. Enies Lobby... everyone but Luffy and Chopper could see through his disguise, but he didn't find the courage to be himself until the end and even then, never dispelled the actual lie of Soge King. He tried to come back into the crew without sacrificing pride and it took coaching from Zoro to get past that. This... doesn't happen post timeskip. He understands his role in the crew and doesn't put his pride before it. Again, why he takes out Sugar in a way that actually impresses people but doesn't blow smoke up his own ass.
3. Usopp got past Ulti and Page One with good health, and they were both well beyond his scope of combat ability. Heraclesun had nothing particularly strong to teach him but literally as of this chapter he's still managing to fight off the Beast pirates.
4. Usopp has new techniques virtually every time he participates. But because he didn't have a strong teacher, he hasn't made the sort of advance that Coby has for example. He doesn't have a DF and Yasopp hasn't mailed him any roids. Sanji barely had formidable armament before recently and Robin doesn't seem to despite training from fucking Sabo, but you thought Usopp would being doing what exactly by now?
1. Sorry, anotehr translation, Chu. I don't see particular differences, at the time Chu was leagues ahead of Usopp, and he won using his cunning and treachery, stuff that we don't see much anymore him doing, where he defeated Sugar by mistake. I hate gag characters, and he's becoming that more and more in my opinion.
2. I was talking about doing SOMETHING, and yeah, the last significative, unique and usop specific thing Usop has done is Dressrosa. I agree that he grew up in Enies Lobby, but to me he is still stuck in a limbo where he doesn't add anything, only gags. Even the sniper shot on sugar is reduced to a gag, which is extremely disappointing. I don't think it was only pride. Usopp saw the merry being abandoned as "Luffy abandons the ones he doesn't need", but he realised that it was not true, and that he would be always be useful, because he's the only one who can do those thinks. And of course, the pride thing.
3.That's exactly my point. Usop is written as a useless wimp, that cannot hold an 1 on 1 fight, but he is continuously put in situation where he is forced to do the same gag where he has to run away. Ulti and Page One he doesn't really fight, he mostly runs away and tries to stop them. I wish we saw more of the Usopp that was hinted after the timeskip, the muscular one, but he was immediately reduced to a gag character. (Like chopper)
4. Robin has the poigne gliffe reading ability, that already puts her ahead in value as a character leaues beyond usopp. Just think about her flashback. Also she fights, she saves Sanji, she does stuff. Usopp in Wano is a gag character. As mostly always.
And I considered Usopp my favourite strawhats. I wanted to see where he grew after the timeskip. And yet, he went nowhere.