Premixed Soylent makes a lot of sense. Ideally, I'd like to see them enter the convenience store market; highway rest stops, for example, are a place where it's very hard to get something nutritionally trustworthy, so in that context I'd choose Soylent every time, and would pay a premium for it.

In the meantime, I hope they keep the powder around for awhile. I find it very useful to pack a few bags while travelling to patch over logistics problems, and premixed soylent can't do that because it's too heavy to take in your luggage.