If it is 14/14 then the Saudi's from Saudia will take the jobs. Contrary to popular belief, they do have freedom to change Airlines. Even 20/10 was very popular among the Saudi's.
Saudiisation rules do mean that Saudi nationals will get priority on any job. This is not the UAE. There are plenty of Saudi's wanting these jobs. I understand that there'll be a short period where expats are a "necessary evil".
The more attractive they make it for expats, the more attractive it becomes to Saudi's from Saudia.