NOt sure about ALPA pilot groups in the past (PAA for example) but I would argue, despite set backs (we all have them, do we not?), that the UAL ALPA pilots have done more for the profession than others...
Did you know that if you have a hire date before 1974 you have re-hiring protections at another airline? It's a protection that was part of the RLA. 1974 is the cutoff per the efforts of UAL ALPA. (They didn't want to end up forced to hire any of the FAL guys after throwing them under the bus)
UAL ALPA has done a lot. They've also taken a lot.
Let's get the good parts of the RLA back. Or let's get out of it!