Absolutely...
If we want to show strength as a group we need as many as possible to JOIN NOW... pay your subs... see how we get on... if you're not happy with what we get, THEN leave... for the sake of 2 or 3 months membership it might make the difference... if the company see that it's EVERY pilot (or as close to that as possible) then we're more likely to get somewhere.
Encourage as many non-members to join. If you leave now then we all get screwed again!