Played the early access demo. Twice. Good stuff. Won't get into details (no multiplayer at this point) since it's out for everybody soon.
As for Shepard's voices, I actually did try male Shep in the demo too. Played with character creation for both genders a lot. Meer sounded better/more tolerable than I'd ever heard him, I imagine you'd have to hear more than just a few lines from FemShep too. And I remember people saying he had improved from ME1 to ME2.
(Then I played demo male Shep as a Sentinel and died in ten minutes.)
Then again, I agree with the others in that Hale is probably better off as a tough character than not. Some of my favourite not-necessarily-renegade moments from her come from when she's talking to Saren, Soverign and Harbinger (the latter in Arrival).
Here, have a tangentially-related fan trailer I found not too long ago.http://www.youtube.com/watch?v=GxhAHc7PF80