I want three different types of packs.
The first one, a real supernatural pack. We get some supernatural items such as crystal balls, and we have the magicians and vampire now, which is all great and all. But I honestly find the content of those packs rather disappointing so far. I want to be able to give my sims wings, claws, fangs, horns, tails and all other manner of bodily changes. I want to be able to dress them in robes and fighting suits. I want to be able to build treehouses, fantastical castles, swamps, caves.
The second pack I want is a cultural/historical pack. I want flapper dresses, elizabethan age ball gowns, peasant clothing, togas, tartans and kilts, egyptian dresses. I want the ability to build a gothic cathedral and an ancient greek temple, a medieval castle and a dutch townhouse, a hunter's cabin and a pyramid. I have found that so far, some of the items needed are possible, but never in good combinations as you can only build green windows with purple walls and yellow pillars so to speak. None of them can really be matched in colours.
The third pack I want is a pack in which the gruesome reality of life can be shown. I want homeless looks, people with extra fingers, a hunchback, missing limbs, body scars. I want more realistic eye-colours. I want hairstyles that look like you've just walked through a tornado or a rainstorm. I want better tattoos, some that might actually represent some of the generally popular tattoos instead of the current images that pretty much nobody would ever want inked upon their bodies. I want homes that can become overgrown with plants. I want to be able to build a river with a bridge over it. I want the imperfections of life.