Can't really help with your questions.. Left the Pulse 2 yrs ago but have regular contact with a few.
The current IPG is made up of mostly the original B1900 blokes who are now Capts on the B717.
They felt that their current wicket was pretty good, why dig it up?
I do feel that AIPA could have been more pro-active when the Pulse was consumed.
AIPA should have found a way to bring the Pulse pilots into the fold as requested.