If you could combine any two Sim games?

I guess I’d pull something like the memories from TS2 and perhaps the fact that babies could come out of the crib and get changed at a change table and bathed in a sink and stuff (or was that TS3). Also, maybe cars, though I don’t know how they’d work in TS4 world. And perhaps University, did TS2 have anything like University?
And Starlight Shores, with magicians and other active entertainers.

I wouldn’t give up TS4, so I’m hoping some of these features might be introduced. Love the game even as it is.