The problem with doing that is the first thing that will happen is every player will descend on those tables and take them as gospel for exactly the actions that are possible within the game to take with precise DCs they can optimize for.
It won't provide guidance to the DM. It will give players a program to execute. Pages of rules to browbeat DMs with.
Then in 2 years time, players will be clamoring for WotC to release new tables with "fixed" DCs and more corner cases and for abilities they can imagine that aren't in the script.
Ez solution:
ignore them