An issue I see with the "cooperative supplement" is that however good it will be, most people will have a different point of view on at least a few ingredients - amount, form, etc.
A solution for this would be the use of CustomCapsule for manufacturing of this supplement. There will be one "baseline mixture", and everyone can change the amounts and forms, as well as add in other ingredients (blueberry, pommegrenate, green tea extract...) if he desires.
There are obviously some issues with that approach, as well as solutions for them.
1) CoAs. Afaik CustomCapsule doesn't provide them at all.
Solution: CC will have to provide the CoAs for all ingredients before we do anything.
2) Forms. Not every supplement is available in the exact form we want, especially minerals; no orotates.
Solution: CC will have to provide the exact forms we specify in the "baseline" supplement. If they provide additional forms too, even better.
3) Advantage for CC. What do they get out of it?
Solution: If they provide CoAs and the forms we need, the community guarantees to buy at least a specified minimum amount of the supplement.
Some auditing of the manufacturign process might perhaps also be neccessary.
What do you think of this idea? It will be impossible to build a supplement that is "perfect" for anyone - why not have it open for modification?
Disclaimer: I am only a small customer with CC, and am not in any other way affilliated with them.