I moved this to feature requests, the correct board, as Tom mentioned. On a side note, all feature requests should be just one request per thread, to prevent topics from getting side tracked, and the issue with stating something as "done" when there is more than one subject. In addition, you should consider using more depth, and search for existing feature requests before posting.
While the requests have potential, making an AI to give even half decent diplomacy is very difficult. Just take a look at civilization 4, for example. It's far from perfect, yet the best there is, and it's the work of a massive development team. Our AI gets stumped by a strange curve in a map, it's a looong way from negotiating with a human. As for a market, it's possible for a base market to exist in mods by trading one resource for another, if the modder decides to create it, though having some type of multi-player market would be considerably more complex.