But as per the spoiler in Emh's post, they are recasting all three deceased Doctors -- and only two with veterans of the original show.
Fair point. I phrased badly what I was trying to say.
In the case of the first and second Doctors, Big Finish has established voice actors who have voiced the Doctors in the Companion Chronicles, so they're going to use those actors and not bring in someone from outside (like Guilor or David Troughton).
Also, given Big Finish's past stance on the issue of recasting, I'm curious to what extent the first three Doctors will appear in The Light at the End
, if they will be handled in a jokey way at a remove (like Jon Culshaw's fourth Doctor in The Kingmaker
) or in a Companion Chronicles style. Or they may have decided that, as a celebratory one-off, they'll break the recasting rule this one time.