If I may offer a quick two cents; it seems to me the projects became too ambition interlaced with too many idea's, which may or may not be possible. It perhaps needs one person to go through, with a few others with the skills needed and they decide what to do;

I think a good rule of thumb would perhaps be if someone is working on a scene it's upto them what they do. So for example Johannus, what extra ships would you like to add? The only caviate to that is if an idea effects the plot elsewhere in the film...

My 2 cents...