I'd like for the scale between the ships and the Death Star to be more apparent. This is mainly because the DS2 is larger than the first Death Star, and if this scale is anywhere remotely accurate, the crashing of the Executor into the DS2 would be nearly inconsequential to the overall structure.
The problem is, they put the Death Star next to a moon which makes it appear quite small. And that's just a moon. Next to a full size planet, it would look terribly puny. Maybe put the Death Star larger in more of the background space battle shots to make it more ominious as if it's overshadowing everything.
-NJM