Just to put a blurb from my github comment on this, but I think we're a little premature for a treasury. Beyond that, I feel a treasury is a central component, and that would make this just a competitor to fiat currency, with oligarchs controlling the big buckets of coins.
If something could be woven into the blockchain (minting system tied to voting maybe?), then that could help decentralize.
As it is, GRC and really most cryptos are at risk by early-adopter/foundation whale wallets at least as much as any exchange whale wallets. eg, MtGox liquidating 30k BTC and shifting the entire crypt market is expected, but when we willfully push our coins into someone else's wallet, it's a trust system. Eventually, we get to a point where it is simply not possible to ensure trust. Imagine of a country's central bank held all of the spare cash, and the administrator had free access, AND anonyminity.
Maybe that's a rabbit hole, but we've already seen what unregulated currency markets do (both fiat and crypto). For a currency to survive long-term, it needs to be intrinsically resistant to abuse, even in a zero trust environment.