So I'm getting ready to start a new campaign soon-ish ( like a few weeks at least, maybe more) and I'm thinking of trying something different, setting-wise. The main city I use is usually Seattle, though I ran one of my favorite campaigns in Hong Kong, and had a small stint of missions in Denver (the whole border-crossing thing came out to be more of an inconvenience than an awesome game mechanic, though maybe that was just my group.)
Also, my runners are almost always just random runners that happen to get thrown together and end up becoming a team. I've never been particularly good at the beginning part of campaigns, and I have never had any runners express interest in starting a campaign with some kind of theme in mind. Like having the characters be a pirate outfit, a barrens gang, a mafia hit squad or any number of other things that I think could be interesting.
So my broad question is, what do you guys think are some interesting settings, both physically and thematically, for a shadowrun campaign? If you can, please include a note as to where one can find more information about whatever you're talking about.
More specifically I'm kind of interested in running a campaign based in Amazonia. The war-torn nature vs technology thing just sounds really fun to me, but I can't really find any good information about it. Would you be able to recommend a specific book or whatever that I might find information about it in?
Thanks in advance