As for Lucci, this was the fight I have the most beef with and why I hate Luffy (Not a burning hatred for the character in general. Just with this fight). Luffy was clearly out of his league fighting him. Lucci had him beat in every way. Normal Luffy's moves were garbage against him. Even Gear 2nd Luffy was being abused by Lucci. You can only show me a couple of points in that fight where the momentum shifted in Luffy's favor. That was when he first used Gear 2nd and then Gear 3rd later, but those small advantages didn't last very long.
After that, Luffy is getting owned some more. Then he eats Lucci's strongest attack 3 times. First one, Luffy stays standing barely. 2nd one, Luffy is face down in the dirt. Only after a pep talk is he able to stand again. And then there's the 3rd one, the strongest version of Lucci's strongest attack. Lucci blasts Luffy's soul right out of his back and into a wall. But miraculously, Luffy, barely conscious, barely standing, busts out his strongest move to date for the first time ever at the very end of the fight and wins. And it wasn't like Lucci was on his last legs either. He was about to go kill off the rest of the Strawhats before that moment. With all that in mind. WTF? Plot Armor to the Maximum!!! This is my reason why I wanted see Luffy lose to Lucci......
as for what i want to see, more characters that are not df users. there are other ways to become strong and commit massacres, it just feels like overkill to me.
He's a main character so for him to lose and not die he'd need to get his ass saved. A plot device that's already over used in manga as is. So instead of people complaining about him winning we'd have people complaining about him getting saved again.
Manga: Naruto, One piece, Bleach, Soul Eater, D.Gray Man, Blazer Drive, Deadman Wonderland, Y+M, Gamaran(28.13), Wolf Guy, Death Note, Gantz, and much much more.