The contents of this thread, detail what I'm going to do, but obv will be redesigned to fit into the Civ 5 ethos.
http://forums.civfanatics.com/showthread.php?t=359227
Wow, I'm impressed. These ideas are superb!
The immigration concepts are amazing, these could change a lot how the game is meant to be played, making the player to focus more on civic development - not only on explorative or militaristic, like it was on reality (I don't know if where you live they put emphasis on that but here where I live we had an "exploration-based colonization", and when you put side by side with English colonies, for example, you see huge differences on local societies, even nowadays). This immigration one is fantastic!
I won't be long since you probably will talk a lot about this mod yet and I probably will be there following, but I must say I'm now wanting it done as soon as possible
I myself will focus more on graphics (have done some mods on other games - 2d and 3d) and - of course it's too early to know - but when, and if, you need some help I'll be glad to help you on your mod, seems absolutely rich and refreshing

(sorry if my english was confuse, a bit asleep - talking on these subjects isn't easy on another lang)