I see this as something like the well known and awesome Please read: make it easier to help you which is widely accepted and linked by the community.
If this manifest is able to serve for similar purposes it would be of great help. Of course we can just wait if it is linked and used like the PSA “make it easier to help you” or not, but if not, all the effort (and feedback) would be lost. But I agree, a survey may be overkill.