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1. What can be expected at best? An improvement on product level, e.g. better, bigger filters, etc. If Google wanted to collect publisher input for new features, WW would be the right place for this. ASA is steadily collecting input (even though he went from weekly to monthly to twice a year). *grin*
2. And at worst? You could be identified as an Adsense critic who deserves a smaller eCPM or EPC.
I'm with LostOne on this - better not interact with the Adsense, unless 100% necessary.
This has just happened to me, I assume Himalayaswater meant "deep" to mean "drop" or "deep drop" . I will not take the survey in the future. I see about a 25% drop. I have not had time to look at my stats to see if it is traffic drop or what.