Don't forget 90day expiry if you leave. Even though you already sacrificed the salary for them. Also very unclear legal ramifications if the company is sold. ie

Don't forget 90day expiry if you leave. Even though you already sacrificed the salary for them. Also very unclear legal ramifications if the company is sold. ie, do you get immediate vesting, do your options disappear, do they become some number of options in the new firm (how many, why that ratio?)... They can deny the sale to anyone until IPO. Its comp they can take away, block or otherwise control.