Yeah, Yakuza pwns the others but it would be hard to develop a storyline if they put choices at the start of the game, think on how deep and complex is the story of GTA 4 ... Many hours spent in the recording studio etc. ... I'm just being realistic.
Two years ago we wanted the map to be 50 or 100 bigger than in SA, more detailed, we wanted the Heaven of car and character customization but it is not possible, proved by Rockstar. They make the story great, you play it.
As Rashon said, I would like to a gangster theme, but only if it's only in the ghetto, play as a low-life, improve your status a bit but that's it ...
My originial idea is kinda hard to be delivered ...
You start as a low-life ghetto scum, during a gang war you save the son of a important Yakuza mafioso, they hire you to do some missions and they give you money enough for you to start your own business ... This is like playing CJ, Claude and Niko all-together in one game ... RAgs to slightly better rags as Dan Houser would say How bout that ? Keeps everyone happy IMO.