Kaido has the potential to be the best villain in OP if Oda can pull off his backstory. He's kinda only a generic antagonist till now tbh.
Well, the goals that he demonstrated are by far the biggest in the series, since we arrived at ONIGASHIMA, Kaido has been gradually showing his personality, the way he interacts with his team, this is important for the character KAIDO, but ODA constantly gave small tips on the character Kaido since he was introduced in 795 until the moment, and I think his complete development is saved for his FLASH BACK, so you can have a little idea, ODA scolded / restrained, KAIDO so much that everyone thinks he is bad as a villain and this to me is something purposeful, he contained so much information about KAIDO that he (ODA) only came to reveal that KAIDO had a DF in chapter 999 (and the full name by SBS), so you can see how much he kept information about KAIDO, and little by little he continues to partially distribute small tips, he gave us some in this chapter, what makes KAIDO interesting is to collect this little information that ODA gives us, and try and speculate what he really meant by that, kaido is a mysterious character, this is something that I have not seen in any other villain who has arrived so far, and these mysteries will only be solved with his FLASH BACK, reasons that made him want to the chaos and destruction of the world, cause humanity to fear, conquer the world itself.
So I would not say that he is a character that until then is generic, I think it is too superficial to describe him.