Ì came across a great site http://www.ditl.org/ that has a great size comparison function. There I took and compared the sov and the cube...I knew it was a big difference in size before but now I came to think about BC.
Is it possible to make a borg cube that is the actual size, 3000m on each side, compared to other ships. I couldnt link to the site but you can see for your self, just select Size charts on upper menu then select all ships on the left menu.
After that just select Borg cube and the Soverign. Then you´ll see that the cube is about 4,5 times as long as the Soverign.
You probably knew all this but is it possible to have that size on a cube in BC? I have no idea but i assume there would be some lagg issues...if even its possible to create that big ships.
I think that won't work. The Borg Cube would crash in a planet. And the shields won't work with that.
I know it is possible to have ships that big, although the damage resolution would need to be lowered alot. I know because I have a ship 5 miles long imported in to BC.
The cube doesnt have to be played with planets, just play in deep space. And shields arent a problem, since borg dont have those round ball-like shields like other ships.
The shields could just be invisible, so that lets say a torp is fired at it then it would hit just the hull. But the shield would take the damage, not hull. If you can have an enourmus fed starbase with shields they why wont it work on a ship? The cube doesnt have to be exactly the right size compared to other ships but sure lot bigger then the ones out now.
Also a cube that size would move ultra slow and have multi-target ability, like starbases. With somewhat weak weapons so that it doesnt destroy a ship in seconds.
The shield size is calculated with the ships radius, so with the Borg cube they are larger than 3 miles.
That is why I can destroy a Romulan Warbird with a shuttle, I simply go beneeth the shielding...
That´s impossible with borg ships. They have no outer shielding, just hull. Have you tried that on the cubes existing? its meaningless, you wont get under the shielding since they arent like the warbirds. you would just collide with it (the cube).