Next gen is what happens when you take Unity's Paris city size and scope (minus the multiplayer locked chests and repetitive bits) and stick a dozen of those cities into a world thrice the size of Skyrim and make it as pretty as Ryse with no loading screens and mile after mile after mile filled with different stuff that are not fetch quests. Picking on RPGs here as shooters meh. It isn't hard. Next gen is immersion and content and prettyness all rolled up. Will need to be PC exclusive as consoles will never do it without compromises. Develop it around hexa cores or the 5960X and 780Ti/290Xs, really use PC hardware to the brink. Take 8GB of RAM minimum just to load as much stuff as possible into memory. Poof! Next gen!