LMAO we have COMPLETELY different opinions.
IMO Nami, Luffy, Usopp, Franky and Sanji got way better after timeskip, and the only one who got worse is Zoro, he lost everything good about him and now he's just a "cool dude".
Aaand Sanji is my fav Strawhat after Luffy.
I agree the pacing is pretty bad, but that's how it's been the whole anime not just after timeskip LOL.
Also kinda got bored in the Enies Lobby arc (the one u call Nico Robin arc). Besides Lucci vs Luffy which was pretty good, everything was eh.
My favorite arcs are Impel Down and Marine Ford (which are before TS but I didn't say before TS is bad), Dressrosa, Whole Cake island and Wano (so far, especially in the manga Wano is insanely good).