This'll be a bit of a read, so I apologize in advance.
As mentioned earlier, there's a -wealth- of culture in food, being one of the main foundations of defining one, creating it by demand of internal and external influences which define said culture and their cuisine being more of a byproduct of it. In the Mix, you have not only recognizable Mixer brands such as Tony's, Bitchn Chickn, and Meltdown, and the recently added Cup O Joys, all with identifiable foods and containers, alongside other things like the various carts strewn about, showcasing the food born from necessity.
This is contrasted by topside venues, where there is a distinct lack of branding in my opinion, but with a clear opportunity for it. I'll include the exceptions at the end, but in no particular order, of what's available to the average citizen...
Two sushi places that both sell generic coffee/booze with minimal exclusive products.
Two food courts, also with few unique objects.
A diner with a smattering of availability.
A coffee cart selling more generic drinks.
The exceptions of course being the more recent additions to the food courts and KMB, which is more a creature of it's own that I can't really include in this argument.
However, while no corporate citizen would ever be caught dead eating a rat kebab or kitten taco, there's never much of a retaliation heard for a Mixer eating a cupcake or drinking an Italian soda, because they're not hard-coded into the player mindset as being "corporate".
This idea comes with an understanding of the obvious amount of work it'd entail for such an undertaking, but I'd like to suggest making an effort to fill a perceived void by branding some objects and places, increasing the "punch" of their image, and helping build the culture around them.
Corpies buying a MegaKaf latte, just to be seen holding the cup.
Mixers having their artisan ciabatta bun slapped from their hand by a ganger as they go to take a bite.
There's already a few brands that lean predominantly corporate that I can think of already, or that have none at all, however there's no real divide and they're still available in the Mix.
I'd certainly volunteer myself to help in the process, if there's an interest, but I wanted to put this out there and see if other players shared the view.