At some point they are probably going to dump their stash. The way to dampen the effect is to distribute the coins more widely.
Don't dampen the effect. Let the effect play out. If the dump and the true value is high, we all get a discount. Buying BTC at 110 after Silk Road got busted was cool. Selling today might be cool. It's for the buyers and sellers to decide - not some moderator. Why do people oppose swings? They are needed and important. Let free markets run and stop trying to control them. Free trading is good, not bad.
Once again, who is we? All 100 of us? I want it to be 5000 of us at least.
What good is it when we have a decentralized exchange if it's only 100 of us using it? We want thousands of people with MSC trying it out making trades because that is where long term value comes from.