Frankly, I don't see this as being a good thing.
You know what I see this as? Google doing a Walmart.
They'll move in and offer a marginally better deal, and because of that, a lot of the competition is going to die, and they will end up being the dominant player.
As it is, Google stopped being warm and fuzzy a long time ago. They're up to "creepy" now, and will probably move into "downright sinister" in a few years time.
Anyway, domainers will feel great about how awesome this extra payout is, until Google starts doing some BS "Your URL doesn't meet our quality standards and we are dropping your payout / dropping your domain from the program". With little to no other viable competition for PPC parking, they'll be the only game in town, massively enriching themselves at the expense of others.
Now, admittedly a lot of this is the fault of parking companies that make shit landers, and hoard more of the money for themselves, but it's still not a good place to be in the longterm.
That's my $0.02 on it anyway.
Glowleaf: If it were anyone but Google, I'd say make a proxy account...