We all know that the 1745 Stuart uprising failed. And while I've seen many threads about the possibility of said uprising being successful, I can't recall that I have seen one where the rising doesn't happen. This is not to say that it doesn't happen it all, but if it were to emulate the previous risings (the 1712 one where James III was ill when he arrived in Scotland; or the 1717/1718 one where the rising was premature and "easily" crushed, for instance) and fail shortly after BPC arrives in Edinburgh. He takes to his heels (I imagine the British would wish to avoid killing him in the fight or keeping him in custody for much the same reason as William III avoided disposing of James II in 1688 - it makes him a martyr, inflames public opinion against the English/Hannoverians etc etc) and hightails it back to France.
Would the restrictions on the Scots be as prohibitive as what was brought in post 1745? Or would the cauldron of differences between Scotland and England continue to simmer? And how would Charlie's flight impact the Jacobite movement? Would it be seen as an act of cowardice by some/many? Would France wish to make use of him at some later point in a future war?