custom new world creation

Not really interested in that...I'd rather they make some worlds bigger, like the vampire world (why can't I remember the name???) and maybe add a few worlds that are more diverse, like a snowy world would be cool since we have a dessert, why not something arctic?
And maybe some sort of magical world like a mix of sixam and the plant sims world that is hidden in the tree (another name I forgot).

If they did add it, I can only see it being limited, like there would be a max how many custom worlds one could make and how many lots (also their sizes) and stuff you could put in there and maybe using already premade maps.

But I don't need it anyways. Though I get creatively it could be really great (if it is not too limited).