Weekly Discussion Challenge #3

[aralias.livejournal.com]

Good discussing, guys! Here's another question to contemplate:

'Shada' was originally a Four story, and later re-cast as an Eight story. How would a similar change (either of which Doctor was in the story or which Master or both) affect a Doctor/Master story of your choice?

I even have an example fic from the anon meme: Prey of the Cheetahs (which is Seven story 'Survival' as a Three story).