With EbN most of the supernatural Life States are in Sims 4. I would of course like more but a general satisfaction that if you have RoM/V/W/EbN you finally almost have the equivalent to Sims 3 Super...
Lot Trait: Estate (adds NPC servants cook, clean, feed animals, etc. at no direct cost (or much lower cost than services) but they need food and a bed (assigned) or will leave daily and return the next day).
Era Living Lot Challenge (basically "Off the Grid" and "Back to the Old Days" with applicable stand-in items to make up for lack of tech/appliances).
Rats and Pestilence Lot Challenge (basically if you have your hygiene get to orange/red while on this lot, you roll a chance to get the plague. Lot gets dirtier faster and if the lot gets excessively dirty rats appear and can bite Sims with a chance of getting the plague). Plague if not treated results in Death by Plague.
Death: Plague.
No phones! Homing pigeons or other alternate ways to get services, etc.
Traits: Scholar (learns logic and other academic skills faster as long as it is not technology based). Renaissance Sim (learns Creative skills faster as long as it is not technology based). Underprivileged (learns all skills slower, has more fails and low quality crafted items).
Renaissance Fair and activities (for those who want to integrate the medieval theme to a modern game). This could be a community lot type that changes Sims to medieval costumes.
A large/grand orrery on a community lot for Scholar and Renaissance Sims to discuss horary, astronomy and astrology. Allow adding solar eclipse events to the calendar once a month/season, and add birthdays to calendar (otherwise birthdays will be populated when born on said day).
Simology: Astrology Signs (with seasons will be tied to the closest applicable season). Astrology signs can improve certain traits' moodlet results if they are complimentary to the sign. Example moody traits (Gloomy, Macabre, etc.) may be associated with the Cancer sign and complimentary to creative moods, Scorpio may be complimentary to flirty moods and the Materialistic trait. This should inspire to make Sims' traits complimentary to their zodiac sign and/or vice versa or otherwise fun to make them conflicting.
Birthstones (Crystals Creations cross-pack) if wearing your birthstone (aka in game crystal) mood's moodlet has double effect.
Pets: Baby Dragons.
NPCs: Servants.
Writing Skill via books/scrolls.
Archery (Hunting)/Sword Fighting skills.
When hunting you can acquire red/white meat.
Forest rabbithole: for hunting, quests, etc.
Quests like a jobs board.
Celtic, Norse, Gothic, etc. inspired cultures for CAS and Build/Buy. Pop culture wise for inspiration GoT, LotR, maybe even Dragon Age references, etc.
Optional Pirate Theme complimentary GP:
In homage to Sims Medieval, an optional Pirates and Nobles type Game Pack to go with but also can be stand alone could be ideal. Like this Pirate Game Pack Idea.
For example an old Sims 3 build of a medieval cathedral (cemetery).
i just checked the link you've sended me but omg it's so well expanded with the ideas you have in mind i'll be getting that medieval + pirate pack if the team will ever decides to create your pack ideas😍😍