Builders How Important Is TerraForming To You?

For me it's not life changing important, but if! we get seasons anytime soon, it will become more and more important for me. I want snow covered hills on my lot and not only in the distance. I think having a flat lot is just getting more and more boring, even for someone like me that's not too big on building.
I would looove to have the option to build a real pond I could even fish in. Kind of like in the Sims 2.