Teamsters fight for respect and once they get it they don't give it back. Weigh the pros and cons and ask lotsa questions keeping in mind that management and unions WILL lie. You just need to decide who is more truthful. Talk to NJ and FLOPS pilots one on one and get many opinions,you can only get the real truth when they are free to speak without their peers around. A fractional has only one choice for union representation for a first CBA and as history has proven it does not need to be permanent. If you think it has to do with money you are entirely correct.
I must say the reason the Teamsters have to fight for respect is because they are a bunch or intimidating crooks. One has to fight for respect when one obviously doesn't deserve respect. The other way to get respect is to behave in a manner which engenders respect, but that's not going to happen.