This could be really great for existing investors to buy employee equity. There's no easy way for an employee to reach the broad set of existing investors with

This could be really great for existing investors to buy employee equity. There's no easy way for an employee to reach the broad set of existing investors with a relatively small amount of options/shares. Founders are very much against this happening being worried that it sends the wrong signal. And at a later stage nobody will want to help a small employee do this as the amounts are not significant enough.