What I really want, and no one has made, is for some comprehensive scraping of LinkedIn and Crunchbase to help answer the following questions for each company:
- Average turn over time for different job types
- Average experience of new engineers (new grad vs. 10 years)
- Distribution of management vs. engineers vs. PMs etc.
- Are management promoted from engineering or hired from outside?
- Have the founders had successful companies before? In the same area or different?
- What schools did employees go to? What is the education distribution of employees?
- what's the gender/race/etc. make up? (Does the company actually value diversity) etc.
Answer those, comprehensively, and I'd easily pay for access to that service.
Alternatively, if you are having companies post jobs, have them answer those questions (and tell them you'll check against LI/CB). i.e., get actual transparency where it matters, not just fake/propaganda transparency like you have here. That would actually help me make a decision to apply or not.