This bit, however:
better liquidation preferences that favor employees at the same level as investors because employees _are_ investors if they are taking a pay cut
seems serious and fair to me, and perhaps something that startups could actually do to stand out. I don't know how doable that is vs. what barriers there might be to it, but I'll ask.
This is all intensely vague and general but it's an interesting line you started down with the balance of investment vs. employee contributions, risk and compensation.
The thing about fiddling with liquidation preferences is that it's very hard to change and will have minimal impact on the bottom line for employees. Liquidation preferences only matter in the case of companies that fail, where they might make the difference between making $0 and making a tiny bit of money. Employees will make virtually all of their money on the companies that are successful.