I prefer DS2 being around Endor's moon where it is. It makes more sense that it's being built somewhere 'hidden', and that it's a surprise that the Emperor is personally showing up ("The Emperor is coming here!?")

There is just no way the Rebel fleet would do a direct assault on the Coruscant system.

What I will say is, I'd like to see Endor itself more prominent in the forest moon's sky and perhaps in some of the space shots, and the DS2 being more obviously in the moon's orbit in some of the shots also.