A few suggetions:
First: Make harvested wheat give three/four seeds instead of one/two. As it is, I wonder how much energy is expended planting/harvesting/grinding/cooking a loaf of bread compared to the amount of energy you get out of it. I a bit of a bonus towards making it a staple food crop would be great.
Second: Storage objects varying not just on number of squares/layout, but on object preservation? This would be useful once food degredation over time comes in. I.E. Crates would be really big, and hold a lot of space, but are not so good at keeping food fresh.
Third: Inventory space! I don't know about everybody else, but I for one would love to see inventory made about, say, four squares bigger? (:oops: OOOhhh... so THATS what backpacks do.....)