1. Playable Aliens
We know that BioWare can make a compelling protagonist with more than option for race/species because they have done it with Dragon Age. The options need not be as many and varied as the ME3 multiplayer, but it would be wonderful to be able to choose from a selection of the more popular aliens.
Ultimately, even if the game does not offer a choice of alien species, it would be great to have a non-human protagonist anyway. Each species has a rich culture and history that would be interesting to explore in greater depth, and what better way to approach that than as a member of that culture?
2. A Robust Character Creator
Coupled with the ability to play as a member of a different species, this could be really exciting. Imagine picking your asari or turian’s face markings, the pattern and color of your quarian’s enviro-suit, or the coloration of your drell’s vibrant skin. That, plus the ability to determine your character’s class and backstory (options BioWare generally provides) would make for some truly unique characters and gameplay experiences. So many possibilities!
3. Ship-on-Ship Combat
However, the new installment need not have these restrictions. It’s a new story, potentially Reaper-free. The new crew could engage in battles with space pirates or a new species bent on taking over the galaxy. The time and energy previously allocated to wrapping up stories that began in the first and second games can be refocused on creating new and interesting gameplay mechanics like this one.
Besides, it would be a great opportunity to get a better look at the different kinds of ships that populate the galaxy. The turian and asari militaries have massive dreadnaughts capable of taking on Reaper forces, but what about the smaller ships: merchant ships, passenger transports, fighters? The only smaller ship we’ve really seen is the Normandy, and it would be great to see some more.
4. Some Familiar Faces
5. More Exploration
By the way, planet scanning doesn’t count as exploration. Cut that out!