How about instead of the boring fully exposed reactor replace/add something more impressive and the rebels have to maneuver more in there.

I was thinking something like the warp machine from the Contact movie.

Those rings could turning around the core that provides energy and an impressive money shot.

Just one suggestion - where the window is, and where the Death Star surface is, I think there should be a small hint of sunlight coming from the sun on the other side of Endor

Well true, but i left it "moodless" because im toying with the idea. I will do some sunrise shots someday later.

-Angel