Thanks for the summarys. I think most people on the board will be quite interested in what the guy at the end of the bar has to say.
I personally like the pretty grim outlook coming with the drought (and will use it, when the time comes), but i do like these other two different campaign-settings you described.
The riverine/coastal one of Blue Two & the airships of Milgov in Manifest Destiny are very neat.
I hope you post more about it, Web!