Potential applicants should have a good look around before looking at CX unless they are after the free type rating - joining now as a DEFO the time to command at CX would be longer than most carriers in emerging markets (CX only got about 40% captains).
Why would you? KA down the road offers commands in less than two years and then there are the ME3.
CX will only attract pilots who can't get into any of the others - either because they got rejected or they don't meet their type/hour requirements (ie. biz jet pilots, single engine fast jet and heavy turbo prop).