nicolas.nickle.
I can't see what you are complaining about? There are plenty of carriers out there who do not employ seniority systems. In the UK alone, two of the three largest carriers don't have such a system. As a result they have been able to offer terms and conditions that have enabled them to pioneer rock bottom headline fares! The trouble is, that from these forums alone, they don't seem to have fostered the utopia you alude to.
Promoting from within a company is entirely a correct and proper concept. For the employer it allows them to select people with a history that they can verify and vouch for, (something else that seems a little woeful from some of the threads on here!) It provides for a career plan and rewards an employees loyalty provided they attain the requisite level of experience and ability.
A seniority system with incremental salary scales, rewards an employees loyalty. Doing away with such scales simply provides one rate for the job. That rate (judging by those companies who have employed this practice) is not only at a median scale, but evidently at a very weak level of industry average.
The only hope for pilots stuck in the mire of the terms and conditions that you find in those companies who have adopted the practices that you advocate, is to move to somewhere better. For example, some of the "legacy" carriers who do not ignore loyalty and domestic talent. Of course there isn't much of an exodus from those carriers, so there isn't any particular demand for non-entry level positions either.
The irony of your argument, is that it is the managements of the airlines who have adopted the practices you advocate, that have used this to their advantage.