Firing Popkins because the slap hitters surrounding the roster couldn't generate enough power to do any damage would be pointless. Santander and Barger were two of the biggest power threats in the lineup and they either didn't play all year or barely played. The one power hitter on the team did well (Okamoto). Kirk has been good since getting healthy. Everyone else is either playing to expectations (Gimenez, Lukes, Straw) or regressing to a more normal level of production compared to 2025 (Springer, Clement, Varsho, DS, Heineman). Vlad finished a season as a 1 WAR player like 18 months before he got $500M and there are quotes dating back to 2020 when Montoyo/Martinez were talking about trying to increase Vlad's launch angle. He is what he is and no coach has been able to get through to him. He will either be elite, good, or trash in any given season, and we won't know which one until it happens. He's the one real outlier as far as performance vs projections but no hitting coach is going to get through to him either way.
I think Tony Taters is probably cooked, he's effectively missed 2 seasons in his 30's and he only has one skill that relies on bat speed. Probably not the best contender to age well. But aside from that, as long as 2027 Vlad is closer to good/elite, then I think the offense likely does better next season organically just by health (Barger) and whatever additions they make. If Taters is done or struggling then Keys as the DH would add a nice injection of youth/upside to the lineup. They need more of that.