That's a good one, now how many regenerations did she burn through before deciding on Lalla Ward, or do those tests even count as regenerations? Because, either the Lalla Romana was her first regeneration or it was her 5th? 6th?

Interesting theories, but it's not the first time a previous Doctor Who actor has graduated to the lead role, Capaldi's Doctor commented on looking like a Roman citizen from The Fires Of Pompeii, and before he was the 6th Doctor, Colin Baker played the Captain Of The Guard on Gallifrey in Arc Of Infinity, but we shall see what the real explanation is, as I have a couple theories of my own, by resetting the universe Gallifrey could exist again and the Punjabi Rani could be alive somewhere, leading to a possible team up between her and Dawan's Master, speaking of which, I feel that the Timelords knew that someone would infiltrate their historical records and, perhaps altered the true Timeless Child story, and perhaps it was Omega all along (Timelords are sneaky like that) Lord President Barusa seeking the Rod Of Rassilon to achieve immortality in The Five Doctors is a perfect example, but that still doesn't explain why The Fugitive exists or The Valeyard, or why it always snowed around Ruby, or the slugs from Dot And Bubble (THAT needed to be a multiple part story, or given a sequel, this one really annoys me 😆 🤣 😂 😹)

You forgot to mention in the Hartnell story War Machines which introduced us to Ben and Polly and did Dodo dirty with an off screen farewell, WOTAN referred to The Doctor as Doctor Who, stating several times DOCTOR WHO IS REQUIRED