Are you serious with this? You're telling me that PH use will optimize the body's testosterone production? Regardless of how you want to twist the semantics/wording of this, the fact is that there will be at least some level of suppression (if not shutdown) upon cessation of use, which is what AAS/testosterone will do (although I'm not implying that it will be to exactly the same degree).
Again, the legality as determined by Congress is hardly the be-all-end-all regarding the safety of a product/ingredient/etc. If we use this logic, that anything that is legal is safe, anything that is illegal is unsafe, or even just that anything legal is safe(r) than anything illegal, then that means that ephedrine is unsafe, or at least not as safe as these PHs. It would also mean that, if your're in the EU, agmatine is unsafe, as it's banned from supplements. This is just completely fallacious logic (appeal to authority, except I would argue that Congress isn't even an authority on the subject). The only thing that these PHs being legal means is that they are not illegal, it really doesn't tell us anything conclusive about their safety. Legality is certainly an appealing aspect for these PHs (as opposed to illegal/banned AAS/PH), but it should not be taken to mean that they are inherently "safe" simply because they are legal.
Also, if you're the patent holder for these PHs (which this thread makes it seem like you are), can you tell us on the record that these PHs are safe and that they will not suppress and/or shut down testosterone production after cessation of use, and also that the noted adverse effects on cardiovascular health/parameters are not of practical concern/significance for end-users of these products?