Making such a fund will make bitcoin gain legitimacy as everyone has a stake. Once you have 70BTC every human can have a stake in Bitcoin. At least on paper until the fingerprint reading equipment thing is sorted out. It would be in every Bitcoiners best interest to donate a portion of their holdings to such a fund.

Edit: in fact every Bitcoin-holder would benefit from giving away Bitcoin until it hits a sweet spot of potential increase in BTC price and BTC-percentage given away.