I totally get that the terrain and obstacles are part of the game design, and I personally like it that way. I was thinking though that perhaps players could unlock the ability to remove/shape the terrain as they like in the late-game where space can get tight. A few ideas for this:

• Unlock a decoration, and be allowed to destroy that kind of decoration. Like if you've got so far as to be able to place a fountain, we can then remove fountains--letting us get a little more room if we feel like it.

• Unlock the ability to flatten cliffs and water.

• Unlock the ability to add cliffs and water, to our own taste.

• Unlock the ability to remove permanent features like fans. (Possibly the ability to add such features also.)

Alternatively, these features could be available only in creative mode? Or unlockable in play mode, and always unlocked in creative mode as usual.

Anyway, this is just as idea.