Michael Off The Shelf Board Game Reviews
"Nature vs progress' is how I would describe almost all Miyazaki films. :-) nausicca, princess mononoke, ponyo and in some ways Totoro all are extra heavy on that though they all have it in some fashion.
I think you're in good hands with Mononoke as a foundation. :-)
I always considered Miyazaki films as more stories about people and the environment is just a 3rd protagonist/antagonist. Look at Kiki, Grave of the Fireflies, Howls, etc. He seems to present war just as much as nature which to me is why i always felt his stories are about people and the trials they go through in their lives. I do own and have watched at least 15 films but some of them are studio Ghibli so maybe there are outside influences (grave of the fireflies for example).