Very nice layout of the required tables Mr. Kelly, using the 5% across the board. I agree with you that the preface Gygax had with the Fighter progression option is a nice idea to expand upon.

I especially like the copious 'yea, but' footnotes pertaining to the crucial exceptions and little rules hidden in the PHB and DMG laid out clearly so one does not have to go hunting for them. There are quite a few once collected together.

The expansion of the Cleric Turning Undead tables and the conversion table at the end were a nice addition. The Turning table expands greatly upon the concept for other denizens and one can figure out the certain notable figures alluded to in the writing clearly enough.

A couple small caveats:

I think there is a repeated, small typo on the 'To Hit' weapon tables, where the 'Armor Tier XI'; (3rd last column header) should be 'Armor Tier IX'? Pax Romana indeed. heh

The other query I would have is the conversions to %. While a nice way to have a more immediate judgement for the DM on odds, would the repeated '20+' not be 5% as rolling 20 is a valid outcome? Maybe I'm reading it wrong.

Overall, a nice addition to print out for one's DM screen tables, to have all the both obscure and heavily used requirements at hand. Great work as always on aids for the 1e and other older D&D systems.