I ever posted this on another site, not sure it's official Sims 4 forum or not. But I hope the Sims 4 team/developer read this and put this into consideration.
First, I don't own all of the packs yet. So I'm sorry if what I expect is already available and sorry if there's any grammar error.
•Object Items
*Plumeria/Frangipani tree: I love this tree. I've seen it a lot in a contemporary, luxurious house and I'd like to have it
*Functional vehicles
*Ceiling shower
*Hanging chair
*Swimming pool jump board
*Ladder
*Full-height wardrobe
•Build Mode
*Spiral stair, U-shaped stair, L-shaped stair, or even custom stair if possible.
*Ceiling "tiles": I'd like to have some wood material on the ceiling. It adds some warm and not bland as plain white.
*Full-height, borderless glass window
*Infinity swimming pool
*Full-height, simple modern door with a thin frame.
•Lot Assignment
*Hotel or Resort: This one is very great, especially on the new Island Living packs. Many people wanted to see this too, as you can see in the comment section of LGR's Island Living Review.
•Gameplay
*Ability to set shift for restaurant, vet clinic, etc. It's not fun to manually open and close the store.
*Ability to manually set lifespan, or at least, make the current Long Lifespan shorter. Because what we see now, Normal Lifespan (81+ days) is too short while Long Lifespan (324+ days) is too long. We need something in-between.
*Able to own more than one house in a household.
*Ability to transfer money to other played households. For examples, if I move out one of the sims to a new household, I can adjust how much money he/she has to start a new life, instead of a fixed amount of $20000. Also, if a sims move out, the main household fund will be decreased by $20000 (default) or as much as the amount we transferred to the new household. What happens now is the main household fund stay the same, unchanged while the new household gets $20000 out of nowhere. This is unrealistic and can be exploited without using cheats, by split and merge household repeatedly. I know I can manually adjust each household funds using cheat but I hope this can be done without using cheats. I also think it won't be a hard job for The Sims 4 Team because we already have the Venue Transfer Funds option.
I know some of these requests are too much though. But hope this can be ideas for the upcoming patch. Thank you!