6. Fallout 4
Fallout 3 and New Vegas are both excellent games in their own right, but they were so similar, it was a trek to play through them fully. The bugs and glitches cruelly hindered the game also but the sheer quality of the series make a next gen title a must. While Fallout is renowned for its huge open worlds, character progression and story should be the main focus. Dishonored on a much larger scale would be amazing with exploration in a world where you received no clues or maps would be a welcome hardship while traversing the wasteland. Instead of the usual progression of ranks and classes, everything you do and say could be recorded and incorporated into your game world with NPC's reacting in a more realistic manner. Online might be a lucrative option but it could ruin the game so here's hoping they concentrate on creating a stellar single player experience.