There have been a lot of opinions expressed on this thread, but facts are more relevant. Are easyJet expanding too rapidly? The symptoms are certainly there. One of these would be the present chaotic rostering system. The danger here is the apparent management attitude of: 'there is no problem'.
Pilots who are provided with training sign a 3 year agreement. After the 3 years they are free to leave. easyJet had better beware that many pilots are just waiting for the 3 years to be up before moving on.
A poor pay rise is frankly less important than life style. Unless easyjet can sort out the rostering problems and their general attitude to their pilots (which is at odds with their advertising campaign) their problems will just get worse. It should start with treating their applicants better, right through to better support for their commanders on the line.