I've just started playing this in the past few days, and as the type who loves to come up with features and ideas for games I love I of course rushed to try everything and see if there was anything I couldn't do that I wanted to. The only thing I've encountered so far is that you cannot place food items onto surfaces. Now, due to the mechanics of food usage in this game I understand why, but I thought up a workaround just now that probably isn't doable but I feel really needs to be thrown out there anyway. Basically, it involves tweaking the Pet Food Bowl and adding other items that work like it. The idea is that when you place a food item into the storage slot in the bowl or another item like a hypothetical Food Plate, it will change the sprite so that it displays the bowl/plate with the food item you stored in/on it. Granted, it's probably way too much work for such a silly thing, but it's something I've wanted in every game in this genre I've tried and I've been able to do most of the other things I've wanted to in this game so far.
I agree, I wold like to be able to display the cakes I bake. I would like to be able to place my food on the counter tops, tables, etc. and having a plate where you can place the food sounds like a nice idea. Another thing to display food in are those display stands with glass domes where you put various pastries on display. Whatever way decided on how to display food, at this point, I don't care how as long as I can display them.