Personally, I used to use custom content excessively when I used to play Sims 3. Playing Sims 4, I haven't downloaded any cc or mods yet. I don't think it's needed, but, it gives your game an extra level. It makes the game more personal to you as you can customise the game ANY way you want. It's your own Sims game. You're…
I'd like to see more careers available. Possibly, an engineering field, teacher, fireman, etc. More general careers. More varied part-time jobs for teens, and the option for adult sims to have a part-time job. (Is there a mod for this??) A more interactive neighbourhood. More things to do, perhaps, a park in each one…