[amp-consent] Fine grain, client-side consent

Some publishers may want to implement fine grain consent on cookies, discriminating between analytics, marketing, etc. An example of this is what The Guardian is dong today:


Would it be possible to implement this in AMP? The only two ways I can think of are
1. implementing N amp-consents, which wouldn't be practical, as the UI would be messy
2. Using `sharedData` in amp-aconsent, but this would require defining an endpoint to manage the satate of the consent, which is a high bar for something that was not requirirng an endpoint untill now.

Is there any other way of implementing this fine grain consents? in AMP, client-side only? If there it isn't, could this be considered an FR?

Thanks,