I like your ideas here. The compound, off-beat meter stuff at the end was really what did it for me. It definitely reminded me of the pirates theme (which is a good thing), but a little more subdued.
My biggest compliant would be to start the switches sooner especially in the beginning of the piece, I felt like that the drum was going to go on forever and I was waiting for something new. If you so choose, add more to this. I know you said that it wasn't finished yet and this score does not reflect that at all. I think you have a wonderful idea going, just make sure that you take a look at those transitions. :)
Awesome review man. Thank ya much. I'll continue to work on this piece and glorify it! :D