Being the first game out of the gate, and managing to become incredibly popular before it got any real competitors, led to D&D trying to be everything to everyone. Surprisingly it actually manages to do a pretty good job at it, if you are willing to use some optional rules and do a little tinkering.
I wonder if it would be a good idea for the new 1D&D DMG to have a set of different rules to support different playstyles. You could have a short section explaining some different playstyles for new DMs, and then have bundles of suggested optional rules to support the different playstyles.
We know they're redoing the DMG to reorganize and make it more newbie friendly. One of the things I liked in the DMG is how they described the Role of the Dice and over a couple of pages gave you different approaches and styles. I agree that they should double down on that in various areas. Cut back on things like descriptions of the umpteen zillion planes and instead tell people how to come up with their own stuff.