I'm very pro-labor/pro-worker, whatever you want to call it, and I'd be all about using a different term than union. It's a loaded term that has all sorts of negative connotation. New decade, new world of tech, new term for collectivized labor. I will admit, the police union problem is a hard counter. It's a solvable problem though, I think.
Maybe we should bring "guild" back into fashion.