Could go from "highly unstable, don't use except for test" to "very stable"...
This would reflect the state in terms of deadlock problems, non-working features, ...
Somehow, it may lower the number of "wannabe admins" complaining about the server being unstable (but unable to fill a proper bug-report) because the expectations would be "quantified"...
And if someone install a server core marked as highly unstable and blows his player base... well, bad luck, he had been warned
