Why create a new one if you can use an already created one.
In ventilation, we can make a special drink from pheromones. We know about the side effect.
For example: Niun will ask Tali what kind of drink it is and how it is prepared. Tali talks about how he prepares. We return Niun back to the bar. After entering the bar, you can participate in a tasting of the drink. Of course, we are waiting for an interesting scene and an increase in lust by 20 units.
That 'special drink' that you are referring to is the Strange Drink. All the Dev would have to do is add a lewd increase to it and he is done and sharing that drink with Nyun already comes with a kinky scene, just boost the lewd increase and done.
The Dev could add an additional scene in the bar where Tali and Nyun share a drink with the other Asari and it prompts a Vorcha gang bang.
Or the Dev could add another mechanic where the Batarian mentions that the Vorcha are starting to getting rowdy and agitated (akin to the turret heat level) and he would appreciate it if Tali could come up with some way to calm them down. If the level reaches 100, Tali or one of the Asari gets gang raped, and the solution is to use the strange drink and have an impromptu gang bang with the Vorcha where the sex is on their terms and not the Vorcha (akin to dumping the heat from the turret).
