easyJet has a pretty thorough and clearly documented command process. Minimum entry to the command process is 2000 factored hours, a good training record and a base captain recommendation. The command course itself has a pretty low failure rate as there is a robust selection procedure. Of course there are failures at the various stages; be it the command sim assessment, at the initial base captain interview or with the psychologist interview. The 'seniority' for a command place at eJ is based on when you first apply - so joining with the requisite hours just puts you at the very start of the process. Base choice is also important in how quickly you will progress; copilots in the command process nominate a base and then wait on the Captains base transfer list. So, for bases with long lists like MXP, BRS or MAN you would expect quite a wait for a command position there. LGW, LTN or Portugal, however, are less popular so you will probably get a command position much sooner if you are willing to accept such a base. Failure at any stage, or poor sim reports will also stall progress. It's a very fair process with oversight from quite a few different people, however, you are pretty much left alone to study and complete all the development required- there is no spoon feeding or hand-holding!