That's an excellent summing up @haidut . Do you know of any athletes directly that have used bromocriptine for fat loss? What was their experience like? I know Lyle MacDonald recommends its use, albeit in the context of calorie restriction.
I think some of the famous tennis players like Sharapova and the Williams sisters got burned a few times for testing positive for bromo. I think all dopaminergic drugs are on the official doping list, and as you can see it is for a good reason. IMO, something like caffeine and a substance that inhibits the stress response like pregnenolone or emodin would also be a viable way to lose weight without exercising yourself to sickness. Emodin is a powerful and selective 11b-HSD1 inhibitor and some Chinese athletes are already using it for effortless weight loss given its excellent track record in diabetes II and hypercortisolemia.