Do markers like anything specific when marking major works for multimedia?

I initially wanted to make a film involving portals e.g. My film would have a plot though, not just be trick-shots.

However, would it be easier to get a band 6 if I made a film that addressed and issue in society or had a moral to it? For instance, I had an idea to make a film which speaks about how people live their lives the same everyday. We eat, sleep, work and repeat when we should be making most of our time on Earth.

So, my question is, would it be safer to go with a film that addressed an issue in society? Or would it not matter if I went with something that was more fun and less serious.