Despite much of the fallout centering on Crown Prince Mohammed bin Salman, it appears that King Salman is letting his son get his way for now. The crown prince already is rounding up fall guys and has even been put in charge of restructuring the country's intelligence services. Despite Riyadh's questionable narrative that Khashoggi was killed during a “fistfight” inside the Saudi Consulate in Istanbul, the king appears to be sending a message that the crown prince is here to stay and that no one else should dare challenge him. Among the key personalities we're still watching in the royal power balance are Mohammed bin Salman’s full brother, Prince Khalid bin Salman; Prince Khaled al-Faisal, the governor of Mecca; King Salman’s brother and member of the powerful “Sudairi seven,” Prince Ahmed bin Abdulaziz Al Saud; and former Crown Prince and Interior Minister Prince Mohammed bin Nayef.
My bet is Prince Khalid bin Salman, the former ambassador in Washington, although Prince Ahmed bin Abdulaziz Al Saud is better if they want to continue with the Kingdom: https://www.bloomberg.com/news/articles/2018-09-05/saudi-prince-addresses-questions-of-loyalty-after-london-video
Prince Ahmed Bin Abdulaziz, younger bro of King Salman, reportedly arrived in Riyadh early today from self-imposed exile in London.
https://twitter.com/FrankRGardner/status/1057195663019130880
He would not have returned to Riyadh for nothing, see https://www.freerepublic.com/focus/news/3694311/posts?page=75#75
The question is open: will MbS be replaced as Crown Prince, and if so by his brother Khalid or the Kings brother Ahmed Bin Abdulaziz? or, by the former Crown Prince Mohammed bin Nayef, or
will Khalid be appointed deputy Crown Prince?