Me personally, I'm not too big on the Into the Badlands fight choreography. I love wushu and wirefu/wuxia stuff but it doesn't feel authentic with that show and it just looks off to me. But it does seem like the cast is well trained. If you ask me, I want to see **** like Daredevil season 3 in concept but dialed up to 11. Obviously Matt isn't a supersoldier and T'Challa is faster, stronger and tougher than he is (with advanced tech), but imagine a BP vs Kraven fight like the vs Bullseye one like the Priest fight. Imagine T'Challa doing his ninja stealth thing, scaring the **** out of guys, taking them out slowly one by one until he goes ham on a crowd of them. Imagine T'Challa without his suit forced to fight his way out of a compromised Wakandan embassy. And honestly I find the fight choreography more in line with what I expect to see from T'Challa.
And really I don't think Chadwick is the problem. He apparently trained in like 12 different fighting styles (more than anyone has in the MCU), according to Maresse Crump who also trained him, we didn't see some of those techniques. There was some ninjutsu he learned that we didn't see, and we didn't see him use any Kali as well even though he trained in it. I think the problem was some of those fight scenes were cut short and T'Challa's choreography with it. Like,
look at this. Look at the casino stuff. Some of T'Challa fight choreography was cut out, which sucks because you can see how good Chadwick got at capoeira.
I think like you said, he needs those kind of TWS fight scenes just dedicated to his ability, facing off guys that make him put in work. I think one problem the film may have had is that T'Challa with the exception of the challenge fights always fought regular, low skilled goons with guns. Which is why I'm hoping we get to see T'Challa fight hired assassins this time. Guys with the skill and now that Wakanda's secrets are opening, with the tech and other countermeasures ready to make him work.