How about revisiting the theme of the first game, you know, exploring uncharted worlds with unknown dangers.

Focus on exploration/galaxy intrigue Along with that, bring back planetary exploration More open environments Bring all the good RPG stuff from ME 1 back Basically, just do ME 1 only better and more polished. Also, either make our choices actually matter or don't even have a morality system at all. Or just do whatever you guys want because it's your game you're making.

Borderlands 2-styled variations within each class. (For example: Maya's Cataclysm, Motion, and Harmony skill trees.)

Just keep being amazing. And maybe add a little more "Happy" to it. ^^

They should not listen to any of the "fans."  Ever.

Hey fanboys, all your ideas are terrible, get over it.

How about a new Jade Empire game??

For a new Mass Effect game I guess they can continue from the end of ME3 where the old guy says "One more story" but not about Shepard.

after the fall of the relays, the species have to band together and re populate the galaxy the old fashioned way. 50 years after me3 you are a scout for a new settlement on a jungle planet that is next in line to be recolonized. the wildlife would be the main opponent. the whole game would be about culling the wilderness to make room for a new human (oh and other) world. its been a long time since a game was about pioneering a new frontier.

M.M.O.

a customization character class were you get to chose all your powers and your race.  

More exploration of planets - go back to your roots of customization options and weapon upgrades.  Build a bridge of ME1 exploration and a bit more customization than found in ME2.   I for one, enjoyed the Mako rides but it was a bit too open world.  ME3 seemed too linear and didn't quite hold the adventure that ME2 had.

Garrus and Tali as the stars.

I think it would be really cool for them to do something similar to Halo Reach. Not exactly a prequel, but basically a side story of soldiers that do behind enemy lines type of combat. I think it would be cool to have it first person, but Mass Effect should always stay 3rd person. I don't think an MMO would be a good idea though. There are just too many MMOs out there that are basically a rip off of another one with only 1 or 2 differences. But I'm sure whatever BioWare does I'm going to buy it lol

Keep the same combat as ME3. Let us be whatever race we want (within reason). Keep the choices, but make them a la ME3. Mostly, I just want to play as a Turian Infiltrator with the same capabilities as Shepard.

Keep everything they did in Mass Effect 3 and mabey add a freee roaming ability on words and stuff, instead of railed missions.

bring back micro-managing, and planet roaming

Commander Shepard.

^That's a must.

I would also treat the new game as an addition to the ME universe. What I mean is have a new perspective/story or whatever, but have it tie in and add something to the overall Mass Effect universe. I personally would keep ME as a tribute to humanity. I love the Action/RPG crossover and would keep it in that direction. Keep it single player based.

Bottom line: whatever you do, expand Mass Effect, do not change it.Keep it single player based.

Character creation would be rad!

The galaxy's next hero should be Volus!!!!!!

I want to see the super reapers. A race of hyper-intelligent machines that harness the universe of organic life every 5 million years.

If they put a lot of effort on exploring planets, and improved how they worked. I'd be happy. It could only be that. I'd be happy.

I would love to see a game set ten years after the war. I want to help put the galaxy back in order. Also, open up the species options as well.