I find it troubling how some fans itch for “reset points” when it comes to certain changes from the show template. Like suggesting rolling back the first Black Doctor immediately after his premiere appearance, or crying for RTD to retcon all of the first female Doctor’s run before it was even over.
Why not just… live with it? Let the show go on forward instead of imagining some weird rewritten, all-white-males version? It was fun having Tennant and Tate back for a second, but I honestly prefer Ncuti Gatwa already, especially over a “rerun” face.
On a sidenote, I don’t think David Tennant is anywhere as eager to return to the show (even on an intermittent basis) as his fans are, and I kind of doubt we’ll see him again until it becomes time for that actual regeneration into 15.