Can we have a multi-functional lot type?

I tried something similar to that in Newcrest HollownessDevour​ but you're right about the lack of open world affecting things. In Bridgeview I've got an open air mall with a food court, a row of gift shops and an ice rink which is supposed to be like the town square of Newcrest. Then I've got some artisan stores and a bar on the other lots. In Ridgeline Drive I've got an open air roller rink and coffee bar centrally, then department stores, a kids play castle and a water park. But obviously without an open world each lot has to be loaded so you lose that feel of having a day out in the neighbourhood.