... I would avoid Château de Beaucastel from ages ~8 to 15-20.
Why do you say that? We've had similar discussions in the past about white rhones, but what about red CdP? At any rate, based on your comment, I will put a bottle of 2001 Beaucastel rouge, standing up for a few days, back into the cellar. Hoping to see you soon. Cheers!