Geko , Captains are on better contracts than SFO's who are on better contracts than FO's etc , that's the way it is & that's the way you'll expect it when you're a Captain.
You'll find Captains at Easy very supportive of a structure regarding FO progression although most will be ignorant to how it works. The main reason for this is the Cadets themselves clambering to take ever decreasing terms & conditions even before they get to easyjet & what you are experiencing is the degradation in everybody's future because you & many others wanted to pay to get to the front of the queue .
It won't be long until Captains pay & conditions are offered to the masses at reduced levels & they'll get snapped up by guys ever more desperate to get ahead & if you don't take it the next guy will.
Each new base that opens is done so on reduced conditions yet they fill the places , not usually with current Captains but with CTC clones , the blame does not fall at the feet of those Captains who are ever more conspicuous on their old contracts , maybe you need to look at yourselves to see where things are going wrong !