@Australis13@fedia.io Probably just ignore it and have a new doctor with no regeneration scene.
If it were me I'd do a one-minute tik-tok when new actor is announced with Billie mid-generation just going 'oh, no, not that' and then shaking her face off into the new guy. Don't even need Billie to come in and film, can just CGI it with the new guy busting through after he 'oh hello'.
But my guess is really not even that.
Don't think we'll ever see the Bad Wolf Doctor, even for a minute, let alone an episode or a series.
Fingers crossed though. If new producers do start with a special, maybe at Xmas 2027, it ain't impossible.