Is anyone seeing a significant decline with...

I can understand how a reduced clickable surface  would reduce unintentional clicks, but I don't see how it would effect impressions. Impressions would not be affected by clickable surface.

Am I missing something?

Howdy,

I can see a ~%8 increase for most of our campaigns every month, especially in CTR.
Maybe it's because the keywords are dynamically inserted and the ads are dynamically generated through Google AdWords API.

Everything depends on your bids and budgets. We all know that PPC can reach 100 000 potentials in 10 minutes.

If you mean Google traffic decline, yup - that's right - it leaks to social networks and media sites.
Now YouTube has x2 the traffic of Google, Facebook surpassed MySpace, and they all make M$$ monthly from PPC ;-)

If you need a hand, give us a shout  ;-)
Regards!