This is all pretty much true.
The reason there was so much space on onderon (the void, as it’s being called) is because I didn’t properly fit the skyboxes proportions to the outer edge of rocks. In part for pilots, but also because I didn’t want to spend 40 minutes each compile trying to see if I got it right.
I will say, having open spaces like this when it’s not a necessity isn’t the greatest for optimization. But if it’s tucked in to some corner of the map away from all the clutter, then this is not a big deal in the slightest. Better yet, it could even be its own layer! A layer of void