That's a nice start of a glassdoor like website where you can compare the contracts offered by the various start-ups for employee fairness in their terms.
...until you realize that you've broken every single NDA you signed, and your (already-tiny-sized) startup finds out who you are, and you're out of a job.
Forbidding employees to discuss pay is not legal in the United States. Is discussing the terms of equity compensation somehow different?