very good idea. Isn't the bitcoin foundation thought to do something like this? At least I thought they might be interesting in doing such things but somehow one of the biggest failures was a gold member of them...
some addition: the granted award must be valid only for a limited period, lets say 6 months.
The Bitcoin Foundation's focus is on the Bitcoin protocol itself, in terms of standardizing, protecting and promoting it. External exchanges have never been a highlighted priority to date. The general consensus to date has been "it's a free market" so the exchanges decide their own standards and ways of doing business. Unfortunately we've seen a very poor security track record as a result. Now it's blown up into a bigger issue than most people imagined it would be.