The possibilities are endless.
I think linking lots in the map view to lots in the neighborhoods will be complicated and not automatic. We should have the ability to make a "big" world with 4 to 5 neighborhoods if we wish to put in the work and if our computers can handle it.
I don't see them handing us ALL the tools in an approachable, player-friendly interface. I wish they would though, I'd pay for that pack too.
Tools like: terraforming, adding lights and effects, unlocking all the models from other worlds, lot placement and making them routable.
It's pretty complicated stuff.
What I do see them doing is making ready-made templates that we can kind of shuffle around, recolor and decorate, which isn't at all bad and would be great if they did do it. Customization is and always has been the best thing about sims games.
