I don't foresee them running out of "suitable FO command candidates" following 2013. There are a bunch of current fo's that could resign today and apply as a DEC tomorrow. The reason they ran out of upgradable fo's is due to the 2,500 hour on type requirement, which interestingly enough is not a DEC requirement. EK stopped hiring for a year or so which led to the time in type experience gap in the seniority list.