Information transparency and negotiating assistance with respect to compensation, better handling of harassment and discrimination claims, and better protection

Information transparency and negotiating assistance with respect to compensation, better handling of harassment and discrimination claims, and better protections against arbitrary termination without either chance to improve that's more genuine than most PIPs (if bad performance or mild misbehavior is claimed) or a right to compensation (if it's something like a layoff or restructuring). Very real problems in the tech industry, all of which a union could help with, and none of which require the clearly mismatched "you can't touch that socket - call the union electrician" contract provisions from industries like trade shows that the anti-union people like to overfocus on.