Goretex I think you may be exaggerating just a tad.
A quick look at a random selection of 11 TRE rosters (777) showed an average of 1.2 layovers a month for Sept. Given there's about 50 TREs on the 777, that makes a total of about 60 layovers a month for TREs across the total 777 network.
Given the one destination your mentioned (which I assume is 777?) has 90 layovers a month alone, I'm not sure how TREs can possibly fill all of them to deny you your roster bid?
Payscale..in answer to your question about which fleet has a TRE issue...I understand the current 777 TRE course of 8 won't even cover the number of 777 TREs who have resigned in the past few weeks.