Codpiece
GSM have their own ETOPS approval for the B767. As for the maintenance contractors, who knows. Should have used you guys IMHO. Don't think most of these flights will involve too many more bases, maybe W patterns or dual basing (LPL/MAN, GLA/EDI eg) would cover that. I guess you can only expand too quickly if the market is not there for the product. By all accounts the market does seem to be there, (long may it continue!)
Gatwicknose
What are you talking about? CO operate GLA/EDI-EWR on a B757. US operate ex GLA and EDI on a B757. AA operate ex GLA on a B757. TCX GLA-YYZ B757 None have perf problems. Have you ever operated a B757 or B767?
Eff Oh