Here are the Brewers MLB rankings for several offensive metrics:
BA = 22nd
OBP = 13th
ISO = 4th
This offense is 4th in the majors at hitting extra base hits. That's great, but they are abysmal at hitting singles and pretty average at getting on base (mostly because they can't get hits as their BB% is 4th also). Taking away McCutcheon and Wong and replacing a bunch of CF plate appearances (Cain, Davis and Taylor who are all bad at BA and some slugging issues) you can increase team BA and OBP while only compromising ISO slightly. This team relies so heavily on HR because they pretty much have the same hitter across the board, replacing some of those hitters with higher average/higher OBP hitters should help improve the offenses scoring without giving away much of the power,
Looking at Mitchell, he's actually produced better than any other player who's played CF (outside of possibly Tyrone Taylor, but he is the poster child for the bad in this team with over 0.200 ISO, but a 0.280 OBP). Frelick plus Mitchell likely by the end of the year (2023) will be contributing more than we got from our DH and CF this year. Turang if used properly initially (platoon him until he gets acclimated) could also be another higher BA/OBP contributer to the lineup with a lower ISO. The way this offense is currently constructed we can give up a double to get 2 singles and give up a few triples/HR to get 3/4 more singles and be a better offense.