The Sims 4 is pretty limited in comparison. Once all the expansion packs are factored in, there are over 80 different lot types in The Sims 3. Even though some were just “rabbit holes” (meaning your Sims disappeared into a building shell and then came back out after a few hours), at least it gave them a variety of things to do and experiences to have. From the beach or a comic book store, to a tattoo salon or the grocery store, there are more community lots and locations for your sims to go to throughout each world. Speaking of lots, The Sims 3 has way more variety of locations for your Sims to visit. More Variety of Community Lots and Places for Sims to Go
You can only place lots in the specific spots on the map, and they can only be the sizes that the developers created- nothing larger than whatever the space allows for. The Sims 4 comes with flat, pre-defined maps.