Lots of great responses and I appreciate it, but still absolutely confused why so many DMs are afraid of improvising during combat to improve the narrative; and so much so, its considered immoral? Do you really not trust yourselves to make the right decision, ever? From Gygax/Arneson to Perkins, I can't think of a single D&D author who recommend never breaking from the rules, so utterly confused where this mindset comes from.
Then I'm being told a system where 83% of the time during task resolution the DM just gets to make up what happens shows why improve during combat is bad? This system seems to be literally leaning in on what everyone is unhappy about...
I'll take a break from this thread to give it some time and think about what was said. In no way do I think I'm going to be swayed, but hopefully I can at least understand where people are coming from.