Indeed, you were more than happy to sign up for TRSS in the first place and now that eJ are honouring their side of the contract you want more!!!
True it's a free market so you could get more for your talent elsewhere but don't berate easyJet for not paying you more, afterall you were happy to sign the deal in the first place...
It's a bit like buying a house with a mortgage of 5% and then the next year the rate drops to 2%. Sure you feel disadvantaged but at the start you were happy to sign up for it so live with it. Learn from it and don't do it again!
A fair pay deal for all pilots is required.