I think it would pretty sick if there could be some sort of way to reference the outside world in day-to-day headlines in a marquee sort of format.

I don't think these real world events need to be too complex (i.e., they don't need to affect the peeps arrival distribution or anything), but it'd be cool to see that it is raining and for it to say things like "Record-breaking floods in the lower valleys" or for it to suggest external political, social, economic, entertainment events occurring outside the theme park "world."

I'm not sure if these existed in RCT3 or RCT4, but the idea of news headlines (like Plague Inc. or, I think, Railroad Tycoon does) I think this would add a minor and interesting feature to the game, if it isn't already an included feature because of the inclusion of the corporations concept to this game.