I'm playing a huge and complicated save right now that is taking up so much time, but even so, I'm tempted to start a new one. Here's my save idea. Not sure if I'll act on it, but I wanted to share it...
Be careful when bulldozing ALL lots...especially the ones in San Myshuno, if you have that pack. I don't recommend bulldozing anything but the penthouses in San Myshuno, unless you plan to replace EVERYTHING with penthouses. Building apartments in Sims 4 is harder than you'd think. I also recommend backing up the special lots, like the Ruins or the Bluffs, or the Secret Lab in Strangerville to your library.