5. Mass Effect: Alliance
A Battlefield style multiplayer FPS with Bioware's story telling. It would also include a campaign, which, like ME3, ties into the single player. Think epic species vs. species battles set across Earth, Palaven, Illium, Tuchanka, Omega, Sur'Kesh, Thessia, Noveria and more. Once again, this would only work with a new engine like CryEngine 3, Unreal 4 or Frostbite 2. The important thing here would be to make sure the game doesn't feel like space Battlefield, and has enough new content to stand out. Bioware's signature stories would really invigorate the rather over-saturated FPS market, and would give long time fans a more closer look at locations only briefly played or hinted at in the first three games. Fighting across a massive Noveria snowfield while fighters engage each other, than hurling a warp across to map and taking out a sniper would be made much cooler with Mass Effect's tech and weapons. Armour customisation would also be a nice touch, as well as three man squads and an orders system. Omni-blade kills would be sweet!