Most people have lost the will to argue this stuff over and over, a long time ago, but 1 or 2 keep coming back because quite a lot of unknown people read these threads and might get duff info from them.
I think mm_flynn has got it right. Any bilateral agreement will not deliver a straight paper swap because EASA would be trashing the whole gold plated Euro FTO establishment, which simply isn't going to happen.
The FAA has very little to "give away" on the FCL front because they already allow most of what one would reasonably want. It is EASA that would be giving up a huge amount of a long-entrenched position. I just can't see what is there to usefully negotiate.
What big prize has the FAA got for EASA that would make it worthwhile trashing the European ATP cadet sausage machine which despite occassional (but in this business utterly inevitable) "setbacks" like Cabair
is making loads of dosh for loads of people?