This is one thing I hope the unionization movement will genuinely change. There's not much room to move the needle on pay, but having students have a means of addressing abuse besides "Throw myself on the mercy of the department and hope they don't shred my career" would be a huge step.

Interestingly, one of the grad student union's arguments in a place I was at was, essentially, "You're flooding the university with cheap adjuncts, and it's devaluing our career path", which I thought was, at the very least, an interesting take.