Yo guys, so the video pretty much explains my problem.. if you guys could reply on here, of what you guys want and what would inspire me then that would be appreciated, thanks! (if its in wrong section sorry)
http://www.youtube.com/watch?v=D233FlTogfo&feature=youtu.be

Two words; Concept art. I have told this to another bloke somewhere who couldn't think of a map but anyway, just have a look at some environment concept art on google images an you'll find lots of epic but ambitious scenes. You might get some inspiration for unique features, weapons, etc. from other types of concept art around the interwebs and perhaps from the initial image.

I you don't get anything out of that then I guess you could just simply think about what you would be a cool map. Of course if it's been done before and you don't want to do that, then add your own flair to it, make it yours.