A whitelabel parking system is against the rules of both Yahoo and Google, Skenzo has what they call a whitelabel system, but technically you are just using theirs.
Right before I went to traffic down under, I did a 3 week test with 5,000 domains. People have been telling me that our RPC was going down, but our CTR wasn't going down. So we took these 5k domains and put them on 3 different Yahoo providers and 3 different Google providers. We do this same test about every 3-6 months. The traffic from these domains are only in countries that Yahoo supports. On CTR, Parked was the highest overall, which didn't surprise me as it's been that way for about 2 years now. We still had the highest RPC of the Yahoo providers, we also beat 2 of the Google providers, but we lost to one of the Google providers. So I asked them at the conference if they had made any changes, so they looked. They flagged the account as a Parked.com account and we were being paid "very well". Now they only beat us by $1.29 during the test which was about 0.04%. So we will be running the test again, and we never optimized these domains for our system specifically.
RPC is down across the board for everybody. And after December 15th, it will probably get worse.
As far as templates/layouts go. You never know, new ones may be available now, you just may not know it yet.
Donny