Let's say I have a page with several AdSense ads. If I will do any A-B testing of different page layouts, ads sizes and so on it would be very nice to have an ability to add a channel information to the ads code on the fly (with no visit to AdSense control panel and manualy creating of new ads associated with a new channel for each experiment).
As I can see from the AdSense ads code and the control pannel interface - I have no such possibility.
But it looks a bit frustrating as Google itself engaging us to perform experiments as much as possible but it looks like Google not giving us proper tools for this thing. So I'm sure that I'm just not informed well.
I'd make it in the following way: add a additional parameter to AdSense code (something like data-ad-chan="123") to be able to filter the data by this parameter later on.
The AdSense Experiments section really not looks like the thing I need as it is not giving me the ability to perform the page layout changing.