These are referred to as snake oil. Most all of them have no scientific basis to claim benefit. Oil companies have very deep pockets to identify the right additives to enhance either dino or synthetic oils--and they each have different compositions. When you mix in any snake oil (multiple additives), you don't know how it will complement/degrade the additives which are in the tranny fluid already.

If you are really concerned with increasing the quality or longevity of the tranny fluid, go with synthetic Mobil1 ATF or something similar which is synthetic (amsoil, castrol, etc.)...you won't beat them with any additive.