To make it worthwhile for experienced wide body crew to leave their current jobs (even in the ME), this airline is going to have to pay a minimum of 15-20% more than Qatar or Emirates, and/or have a commuting contract. Why would one go through all the expense of packing up, selling, breaking leases, and above all, taking a chance on a startup if it wasn't significantly better?
They've already blotted their copybook with ham-fisted adverts, all about what they require from you and nothing about what they offer, all secrets and rumours, confirming they'll be a copy paste of the other two.
Yesterday I spoke to a Saudia engineer, he said first flight won't be for at least a year, anyways.
You would seriously move to RUH for just 15-20% more? They'd need to pay me 20% more than I currently get and offer a commuting contract to make it even remotely attractive. I doubt there is a number high enough to convince my family to move to RUH.