#azmael

The cast I believe would have been the same, along with the budget, filming locations and costumes. Just adapted to be more sci-fi. CGI shots of Gallifrey, actual futuristic technology, classic monster cameos, that kind of thing.

Most if not all the ideas for the young Doctor series are in the Leonardo trailer still, as they kept 99% of the concept. The independent company tasked with adapting it had already done all the development before the idea got canned. Storylines, scripts, characters, costume ideas, locations, sets. If you watch the first series, the story arc and scripts should still be clear what they originally were, so it sort of still is, in a weird way, a bit of Doctor Who media.

I think it would have been really popular. I believe it would have broadcast in a gap year, or between split seasons. Similar to what they later did with Class, but instead of late teens, it was for the Sarah Jane Adventures demographic.

I’ve not seen the second series, but my understanding is its a lot more it’s own thing, as by then they’d had time to redevelop it outside of being a reworked young Doctor show. Hence why series 1 is the way it is, and series 2 tonally different.

I’ve done some digging to try to verify this rumour, including reaching out to one of the series 1 writers, but I haven’t found anything definitive yet. I rather doubt that development had gone as far as costumes, sets, etc., given how early in the process RTD seems to have shot it down, but it’s certainly true that the cast list matches perfectly. Plagiarising freely from the Leonardo Wiki:

Jonathan Bailey (Psi from “Time Heist”!) as Leonardo da Vinci, a young apprentice who loves painting, inventing, and creating new things. As the BBC Press Office put it, “He’s not just a genius; he’s an unstoppable, free-thinking creative force who’s always ten steps ahead of the rest.” Obviously the Doctor.

Flora Spencer-Longhurst as Tomaso/Lisa (of “Mona” fame), a girl who lives disguised as a male apprentice at Verrocchio’s workshop in Florence. According to the rumorhound, this would have been the Rani – although she also sounds a bit like Alanir …

Akemnji Ndifornyen as Niccolò Machiavelli or “Mac”, the number one man when it come to fraud or theft. He has a network of urchin spies and cut-purses throughout the city, and he likes money-making schemes and mingling with the rich and famous. Leo sometimes has to get him out of trouble. Obviously the Master.

Colin Ryan as Lorenzo de’ Medici, a wealthy boy largely bored of his life of luxury who enjoys sneaking away to join his friends. He is anxious to please his father, whom he greatly admires. The Monk, perhaps?

Alistair McGowan as Piero de’ Medici, an ambitious man and cousin to the Duke of Florence. He keeps a close eye on all happenings in Florence, and he heads a mysterious secret society. Borusa.

James Cunningham as Andrea del Verrocchio, Leo and Tom’s strict maestro. Leonardo is very loyal to him. The Doctor’s mentor Azmael, or an original character?

In light of this, I could totally believe that the blueprint of the young Doctor series was reused for Leonardo. If true, the transposition of the characters from Gallifrey to late 15th century Florence was frankly inspired. TIL Machiavelli and da Vinci were actually contemporaries!

(Incidentally, one of the script editors of Leonardo, Nina Métivier, also played a role in some of my favorite stories from the Chibnall era: she edited “The Woman Who Fell to Earth” and “It Takes You Away” in Doctor Who series 11, and of course she wrote “Nikola Tesla’s Night of Terror” in series 12.)

This wouldn’t be the first time that planned Doctor Who stories have been repurposed for other series: Wizards vs. Aliens (2012–2014) was made by the same creative team and played in the same timeslot as The Sarah Jane Adventures, and at least one episode was based on a SJA script that had gone unproduced after Elisabeth Sladen’s untimely death; some Dirk Gently and Hitchhiker’s Guide to the Galaxy stories had their roots in Douglas Adams’ rejected or unproduced Fourth Doctor pitches; and quite a few rejected Wilderness Era book and audio proposals eventually found homes outside Who, such as the Sixth Doctor pitch Smoking Mirror, which ultimately became into the Faction Paradox novel Against Nature.

But unlike those cases, where we know the character dynamics of the Doctor and their companion or Sarah Jane’s friends so we can spot their analogues in the new contexts, this young Doctor series is an attempt to do something new. Maybe we can spot the young Doctor and Master [edit: or can we?!], but we’ve never seen their friendship anything like this before – and as for the Monk being an impressionable kid trying to impress his father? It’s completely new.