negotiators?
Do not be misled by loose descriptors such as 'professional' versus 'non-professional' and instead take a hard look at the talent pool on offer to do the negotiations.
During 2005 the AIPA Reform Group posited that professional negotiators would solve the pilot woes and hoofprints (what an apt callsign) even suggested that someone of Greg Combet's stature would fit the bill. Well, after heaping crap all over the EBA7 and previous negotiators the ARG swept into office and simply recycled a multitude of old cronies who struggle to do any better with L/H EBA8 (or any other issue). The AIPA membership have been deluged with myth and very little fact.
Forget those who with feint of pen and taint have sketched pictures suggesting they can save you. Instead, find yourselves some genuine talent that understands the regulatory enviroment and the IR perspective from each side of the table.