I will admit, chapters 1-6 didn't have the best quality but that was only because for some reason I had my resolution on 800x600. I recently changed it to my computer's resolution and the quality is much higher. I think an example of the quality would be on my chapter 7 elite or epic boss on 720p.
If you can get higher than that then by all means, make the quality better. I just made the storyboard for the whole trailer, I just need a good and fitting song. I just hope the editing goes as well as I think it will.