Employees of seed stage startups who have typical option grants can already hop around once they reach the 1 year cliff, since at the seed stage, the strike pri

Employees of seed stage startups who have typical option grants can already hop around once they reach the 1 year cliff, since at the seed stage, the strike price is small and the valuation increase won't be substantial. You're maybe out of pocket $X00~$X000, which is a small fraction of one's base salary. Since both the 90 day exercise window form of the options and this 10 year exercise window form of the options will both have the 1 year cliff until first vest, the ability to hop around is roughly equal for both.