Now with ULH using two SO's an FO and Cpt all they need are warm bodies.
The SO's will not be upgraded for, I reckon, 6-7 years. (I would shoot myself sitting and watching...even when I only had 200 hours).
I can not imagine not flying for 7 years then being put in the right seat and fly to any reasonable standard. But I am sure these new young guys have superman like flying skills...