domthewhiteguyi love nuze and dolly's casts for the reason above and pairing them more (and finding more people like them) with other play by play casters works so much better than having 2 more inexperienced players casting together.
adding onto this, im sure others can agree that they'd like to see more prem players insight even if it isnt super refined like ombrack for example. color doesnt have to sound super amazing if it is made up as far as it's content and i think it would add a lot more to the cast compared to having two people who understand casting more but dont understand the game as much.
also, theres a difference between banter and fucking around. in the past the banter was fairly reasonable but more recently it gets to a point where again, i just have to mute the cast entirely because it sounds way too unprofessional and the jokes themselves arent at all good or even remotely relevant to the match or the division as a whole. cs casts do a really good job at poking fun at a bad play or a players scoreline but they also know when to not make fun of the player and say "x player really needs to pick it up if their team stands a chance in this match" which just builds more tension/importance to the match.
and as others have said, the general lack of enthusiasm makes the cast less enjoyable. i dont know if others share the same sentiment, but i'd prefer quality over quantity whereas i'd rather have better casts and less of them instead of trying to cast every prem match but leaving room for the casters not feeling up to it or whatever other factors might hamper the cast.