An horrific but all too plausible scenario.
Would they think of Jon Culshaw.......?
...or Jonathan Ross
luckily he's over at ITV now.
It may well be they allow the show to run for a while with the current crew + Lucie Green (if she wants to be more involved) to see how things go.
I think most regulars of SAN would be happy with Chris and the rest of the current team, it may well be the BBC will take stock after a few months. If the production costs are kept low, the BBC may well not touch it. I do suspect if they did try to scrap it or 'youffanize' it there would be a bit of a scrap in the press. The BBC has enough problems on its hands at the moment to pick a fight it doesn't need to.