re: Crackpot ASOIAF Theories SPOILERS

Here's a question and plot point that really has my brain pondering. Stannis got the backing of the Iron Bank and he sent Justin Massey with the banker and told him to return with at least 20,000 sellswords regardless if he is dead. The latter would involve him crowning Shireen. 20,000 men at this stage in Westeroes could do some damage, just look at how pieces of a 10,000 Golden Company is threatening the throne.

Where do you guys think this comes into play in the end game??