I would dedicate my time to being a moderator, if such a site was set up. There needs to be a format where everybody can post, but we can make sub threads based on different ideas rather than just a sea of tangents in the same place that nobody can make head nor tail of. Obviously there needs to be some measures in place to protect against trolling and to keep discussion on topic but also to allow debate to flow, unrestricted.
So you've got one mod. You might have to find a few others.
Retinol is stored in the fat cells and the liver. Retinoic acid is stored in the fat cells and the lymphatic system. You're right though serum Vitamin A level is no indictor of Vitamin A toxicity because it only checks the amount of Vitamin A in the bloodstream. It can't pick up retinoic acid specifically, only retinol. Also the body does everything it can by storing the retinoic acid in the fat cells and the lymph to keep in away from the blood.