My airline has hired several Emirates B-777 Captains recently. The way I see it is, when they got in trouble with cash flow they borrowed money from the Qatar government. Emirates was now a slave to the lender who required better crew utilization. The company cracked the whip on the employees. It is now 1000 hours a year. Your days off are now your vacation days. A friend was commercialing thru Dubai and saw a Captain have a melt down in the terminal a quit on the spot.
And as for Air Dubai. I understand it's 24/7/365.
Would I go there? Yes for a certain period of time. It's my belief that the US majors have such a disdain for these carriers, that it's a perfect way to get hired by them.
United is probably the worst of the BIG THREE, as American seems to now have it together and Delta has always been the cream of the crop. But United against Middle East carriers. Oh come on!