Good. Because I don't.
One of the key points of Soylent is that you don't have to do anything except add water. And I'm sure some people consider that too much effort, hence 2.0. It's just supposed to be complete without any extra effort. So literally any effort is an infinite increase in effort.
Don't confuse a select few asking for flavor packs as any sort of mass demand for them. For people like you and me it's no big deal and actually wanted. But I can assure you that there will be lots of complaints about having to add the packets if they ever get released to the public.