more quantity of all the things I do grow (e.g. maybe 12 tomato plants instead of 6, more varieties -- and no I don't know what those varieties would be, but I'd try some heirlooms, if I had that kind of space).
Plus corn, beans, melons, some fruit and nut trees, more berries, maybe even a little patch of grains (I saw a recent post about triticale rye which I would love to try if I had that kind of space). Potatoes, but I am going to grow some of those this year for the first time anyway (yukon gold).
(what do I grow -- raspberries, strawberries, rhubarb, asparagus, tomatoes, peppers, onions, swiss chard, spinach, lettuce, cabbage, broccoli, zucchini, sometimes winter squash (when it volunteers!) sometimes carrots, a whole bunch of herbs. This year I'm ordering a dwarf blueberry for container. Plus a ton of flowers and a large native woodland shade plants garden, the whole back half of the lot. Not too bad for 1/3 acre? )