I think Zoe (and some of the others see Susan as one of the biggest threats!
LS gave a huge hint about where he sees big bucks to be made in the beauty treatments task - and who is the most likely to have submitted a proposal aboout starting up a beauty business????
I have said it before in the forum, but i am pretty sure that they will have had to submit a business proposal to LS as part of their applications, and LS probably had got a pretty shrewd idea who he wanted from the outset. The tasks are where he is watching his shortlisted favourites' performances to help him decide one way or another.
After all these series, we know the type of person he doesn't like (Edna was NEVER going to win as he doesn't like academics), he doesn't like it when losing PMs try to shaft another candidate, or when someone gets ganged up on in the boardroom, and he doesn't like those who hide in the background.
Susan has a business of her own up and running already, is active in all the tasks and wasn't slow to come forward to take the lead. I am pretty confident that she is one LS is seriously considering for the prize, and short of an absolute cock up on her part - she is safe even if she does get dragged into the boardroom