I have no idea how to make a Mod myself, but i have had some ideas while playing. Hope they will inspire anyone, and if anyone makes one of these, please notify me, i need them!! :dizzy:
1: Teleporting. I don't know if there is one of these already, but i really felt the need for making my sim teleport around the lot, especially if you have a time-limit on the stuff you have to do (like getting ready in the morning, being the host at an event, so on.) so like, when you press the ground and it says "walk here" and "jog here", it could say "teleport here" and they might spin around like they do when they age up.
2: Emotion objects. Again, i dont know if there already is some, but i feel the need for a discrede object, like a lamp og a light-switch (something you can have i every room, without it looking stupid, but still reachable), that offers every emotion instead of only one. like, if one of your sims has to meet up for school focused at 8 o'clock and the other has to go to work feeling inspired at 12 o'clock, you could change the emotion in the whole house to make sure that your sim will meet up with that emotion.
3: Platform for stairs. We all know that the stairs in Sims go straight up and down, no turning. And i would incredibly much like some shaped stairs (without wasting a whole floor-level) so i was thinking a platform in-between, that you could place stairs on, so that they will get an l-shape, u-shape or a spiral kind of thing, whatever you want. So, like a "floating platform" in 1x1 you could place against the wall or in the middle of a room, you could adjust the height of, fittingly to the steps of the stairs maby, and you could actually walk up and down on it. Then it might have the same effect as floor, being able to "put floor on it" if you know what i mean...
Hope someone who knows what they are doing will take my ideas and make something great :)