-I'd really like to see birth signs brought into the game, but an original sims version of birth signs and not the zodiac sign. Each sign will come with traits that is unique to that sign alone the player can pick from mMaking the sim character have 5 traits now instead of 3.
-Werewolves, but this type of occult sim would shape-shift in another animal such as a Rabbit, Owl, Seahorse, Dragon or something instead of just a werewolf.
This occult sim type would be able transform at anytime, but will prefer night or day depending on the animal being nocturnal or diurnal which does effect the sim everyday life if the sim is nocturnal but has to work in the day and visa versa.
However, they can drink a special potion, seek a sim with certain magical abilities or medical careers, or simply buy/order a cure on a device.
After the sim is cured it will no longer alter into their inner animal, however though cured or not their children may possibly shape-shift too.
In create-a-sim you can pick your inner animal and if it's a blessing or curse.
They'd also age like a regular sim.
-Genie occult sim would be neat.
The Genie lamp could be bought/ordered, found or gifted. Their can be one owner, and only be a non-occult sim.
Children-Elders can have a lamp, and can only have one lamp at a time.
Depending on the the friendship (and/or romance) the Genie can give good luck, bad luck, wishes and curses but there could be a chance that the gift/curse wont alway be in your favor in the end and a lesson is learned.
If/when the friendship is at certain point, the human sim can give the Genie the choice to be set free. Thus the Genie would lose all (if born Genie only some) abilities but their offspring have the chance of being a Genie regardless.
And in create-a-sim you can simply make a genie, and live inside their lamp as home.
They age much slower than any other occult sim during their young adult-adult stage, but if set free during this age they'd age a bit slower then non-occults.
-The Witch sim should have the ability to be known as good or bad, should have their own unique powers that the player can choose from. Form covens with other witches in the worlds, create unique spells that'll would either work, backfire or simply not have any effect at all when cast. A pet familiar and the ability to use a broomstick/mop also. Witches can only give up their supernatural gifts, None and nothing can cure them from their powers, only personal choice.
Yet all the children born to witches are witches until they are old enough to be released from the family curse at their own want.
-Monarch Career would be interesting.
The sim would have to unlock and discover a few things in a quest-job.
After achieving Monarch title your sim will be the ruler of the worlds.
Anyone related to this sim is now be famous, and their children will born automatically famous at birth, while spouses automatically are famous after enter a relationship or marriage.
The Royal sim can be known for different types of ruling, and dethroned if disliked or mourned for in a public feast.
The Royal sim can renounce their titles but the fame would be the same as a celebrity.
-A Beautician/tattooist career
New hair styles (not the same hairstyle twice), make-up, tattoos, jewellery and clothes.
A better selection of hair colors and option of dying/streaking/etc to your liking.
-20'sFlapper style of clothes and hair. Art Deco themed furniture.
-Superhero/heroine career
Your sim can join a force, be approached or discover their superhero. There would be a selection of abilities to pick from, and one weakness. Their would also be a villain that your sim has to defeat to become an international Superhero/heroine
Those are just some thoughts and ideas..Oh, one last thing I'd like to see is twin siblings being noted as a twin. It's just something that I've wondered about is why twin sims aren't known as a twin. :/