In case you haven't figured it out, if you are on the 757 MEM, you get screwed over and over. And we let it happen because it is in our contract. There's no plan to fix these zingers because the sentiment of this crew force is "I've paid my dues, so should you" ... "I spent 10 years on the panel" ... "but if we try to fix the 757 issues, we'll have to give up XYZ."
Best plan is to gain seniority and avoid the 757 unless you're happy with a particular city you can hold.