I mean besides muh graphics, I guess I would take a game like Pokemon and make it open world. If I was a developer that's the first thing I would do because I think it would generate a lot of money. As far as a game I would like to play, Destiny...I wanted Destiny to be so different than how it is now.
Imagine Destiny had like four locations on earth. Three locations were each devoted to a single storyline related to one of the three major factions in Destiny. You would work with characters in the faction on purpose or by accident meetings and join them as they fight off darkness and their unique situation would help shape their view and allow you to see their perspective. The fourth location would be Old Russia like in the main game, but about 5-10 the size. Then there would be the moon. The other planets I would save for DLC entirely although the vault of glass is my favorite part of the game I would even make that more complex with a bigger gorgon section.
