A new Shogun: TW, of course. I'd like to see the graphics modernized, weather effects retained, and an expanded diplomatic system. I'd like to see the AI updated to be as challenging and realistic as humanly possible given today's technology. I'd want it to be as historically accurate as possible, but balanced with smooth, intuitive and engaging gameplay.

I think it would be cool to also expand the aspects of strategic agents, taisho, and daimyo--to add a "story" element to the game. Perhaps incorporate aspects of the game in "FPS" style, which are segued to when certain actions are taken, or circumstances are encountered. You become the ninja, kunouchi (female ninja--what geishas in the game really are, in my mind), or shinobi, and execute a mission, etc. If a daisho or daimyo flees the field, it segues to an "FPS"-like interface and you have to hunt down the fleeing general or defend yourself, etc.

This last isn't very likely, as it would require a completely different, additional engine, but since this is a "dream game" thread, I thought I'd put it out here. I might expand on this further when I have some more time.