Ravager is just like, the redneck neckbeard in the corner spewing hate speech about immigrants and gay people. Don't underestimate my ability to swoon cute weeb/art girls/boys, I can do better.
Everyone wants to fight Kaidou, he's a cool guy. Mihawk wanted to fight Whitebeard too, that didn't work out too well.
Does zoro have the most connection to wano? Outside of samurai-ken-ing it around the world with his katanas and kimono, and maybe a vague relation to that daimyo family (which would tie him to orochi more so than kaidou due to orochi's ancestor killing the ancestor of that bloodline), what relation does he really have? We've been focusing on Luffy and stuff.
Also we literally went through the year of sanji and an arc focused on him being a vinsmoke and being married into the big mom family, a much bigger thing, and he just like, made a cake and cheap shotted oven. Why do you think zoro will get any better than that? Luffy is the main character, and we won't see luffy's rivals like kid, hawkins, drake, etc till the final war (a gap of years) after this arc, so they're clearly going to do stuff.
Like, I'm sorry that Luffy's pirate captain contemporaries do cool stuff? What do you want me to say?
It's like getting upset that Frieza did more during the tournament of power than Piccolo did.