Other than the fact that your libido would be crashed, water weight, crying like a little girl, etc. Listen, I'm new here but it doesn't seem like a very ambitious business scheme. That tactic obviously wouldn't last long. There are several ways the tested individual could have high e2. (e.g. Alcohol, Xenoestrogens, Soy) Adrenal glands and pituitary glands also play a role in estrogen production. If I were a crooked UGL (aka, ALL OF THEM), I would just have legit Test (underdosed obviously) and cut everything else with that test. To put estrogen in your product is career suicide.
Just my .02c