Sky limit and clouds

In my opinion I think that the sky limit is to low so it would be awesome for it to be higher.
Adding clouds which you can walk on will be awesome because there could be chests on the clouds or mini dungeons.

Cloud dungeons... Hm... Why not?

Yeah I suggested a long time ago for a higher sky limit but apparently it causes lag or something.

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