From my understanding, you're describing (edit: something like) Series FF (i.e. what Founders Fund issues) there-- the founder's institute stuff has certain additional voting rights attached in additional to liquidity provisions.
From Scott Walker's blog: http://walkercorporatelaw.com/startup-issues/ask-the-attorne... http://venturebeat.com/2010/03/01/ask-the-attorney-what-the-...