I'm personally of the opinion that the best way to get some sort of F/A jumpseat recip going is to make every effort possible to get mainline guys on, including a quick call to the CPO for approval to put them in a FA jumpseat. You never know what 4th floor connections your jumpseater has, and we've already built up a lot of goodwill by gaining a reputation for being jumpseater-friendly. When a mainline guy doesn't get on because the plane was full and someone else had the jumpseat, he doesn't call up DALPA and press for a F/A JS reciprocal agreement. He just goes to the next flight and maybe grouses a bit about RJs and how much commuting sucks. Your chances of enlisting a mainline pilot's help increase exponentially when you go to lengths to get him on, let him know you did so, and ask for his help in gaining reciprocity.