My suggestion is mostly for usability, overview, and making it easier to manage your planet(s).

Basically, say, in the stockpile menu, on top of the information of how much you've got in stock, I'd suggest adding values of their predicted trends. So for example, say I'm producing 18 grain, and consuming 24 to try and produce 12 animals (all per minute)
(But since there isn't enough grain production, it wouldn't produce 12 animals)

Then the stockpile would show that as

Grain 0 (v6.00/minute)
Animals 164 (^9.00/minute)

So kind of similar to how population is done currently. This would make it a LOT easier to figure out what your planet needs, so points you at what you'd need to build next.