If you eat enough fatty fish, you don't really need it.

Fair enough.

Potential. It's a possible logic link, but no actual evidence.

Honestly, that is why the S-G Reference was created. It's to get to that info quickly and easily.

Absolutely. Also of importance are zinc and vitamin K.

Still, what you've done is list supplements everyone should consider. The reality is that supplementation depends on contextual health goals, and that is where they shine.

A few simple examples:

Berberine and blood glucose Inositol and PCOS Bacopa and memory Rhodiola and fatigue (as James Miller mentioned) Feverfew and migraines

etc etc. Supplementation, when you apply it to contextual health goals, can be very powerful.

My site, so obviously biased, but entire spectrum of health and wellness vouches for us: http://examine.com/testimonials/