Darn, you beat me to the idea, haha.
Anyways, im not sure why it would cause lag. Adding a few stuff wont cause too much lag right? (Im not a computer expert)
Im actually thinking of a two terrain kind, like going high enough will teleport you to a new "mini dimention" kind of thing.
I like this idea but if clouds and those stuff really does cause lag, i would like a higher height limit. I plan to build a tree house
