Mining - I'm actually going to say they should steal an idea, from all places, Saint's Row 2. Instead of mining an entire planet, send out a couple of droids onto the planet. Every time you swing by the galaxy, stop by the planet and your robo-probes turn in what they were able to obtain. You could also pad this out, say some Geth and coming in and harassing your probes- time to land down and take 'em out.
Also, since Shepard is now not working for the Citadel, let's have then do some actual bounty missions, and please, if at all possible, less of the stupid "I have a problem, go talk to this person 50 feet to your left and figure it out for me," horseshit. I got a spaceship with future Seth Green piloting it- I am here to blow shit up - not be your personal Dr. Phil.
Have your crew actually walk around the ship? Kinda distracting for me that they will forever and always be hiding in their own rooms/ workstations. Have them walk around, talk with each other, eat, stuff. Listen, if Fallout 3 could do it with over 200 characters, you can do it with 30.
More Keith David.
And finally, although this seems to be a Bioware standby, but have your characters have some kind of idle animation when your in a dialogue with NPCs. It's damn freaky whenever you begin talking, whomever is talking behind you just turns their heads and locks right onto you. It's like that one guy from the Silent Hill announcement last E3.
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