Who Actors : David Tennant, Jodie Whittaker, Alex Kingston, Sasha Dhawan, Jo Martin, Jenna Coleman, Peter Capaldi, Paul McGann, and i don't know the way upcoming actors work, but possibly celebrate the new era and invite Ncuti Gatwa + Millie Gibson if they're finished filming S14 by then.
Other : Bella Ramsay, Pedro Pascal (although you will be packed), Troy Baker, James McAvoy, Ruth Wilson, Amir Wilson, Dafne Keen, Tom Sturridge.
Random Thought : Possibly any of the showrunners for Doctor Who eg Russel T Davies, Chris Chibnall, Steven Moffat.
