I want to add to this idea that with the darker ambient lighting introduced in the 0.24 patch, the whole point of the nebula skybox (to add more light) is basically nullified. Assuming the nebula wasn't a purely stylistic addition, I think it'd be cool if the devs considered re-adding the older style skybox with a little ambient lighting so night isn't pitch black.
That alone would make me, a player primarily interested in exploring, soooo much more excited about DU.
Just my two cents.