I certainly don't see DEC at easyJet happening in the next couple of years at least.
As for those joining and expecting a quick command, it depends on your definition of quick! Certainly don't expect one within the next couple of years as there are presently over 250 SFO's who have at least started the command process which will most likely cover the LHS upgrades for 2012/2013. Some of those may decide to leave for BA etc but I doubt that would be more than 10%.
So, if 2 years for you is a quick upgrade (which I think it is) then come on over to the Orange side, if not then I think you will be disappointed.
Anyway, Good Luck to all those that do apply, I for one really like it here.