Played the demo, it was mostly hit with a couple misses thrown in. First problem I had was the lip synching was off, I'm betting they fix that for the full release. Gosh... at least I hope they do... Second was the abysmal textures, uniforms in particular. Further, the walking animations for Anderson during the tutorial sequence were jarring, the worst I've seen in any of the Mass Effect games easily. And the combat is still very ME2-ish, you snap onto cover... it's a little over emphasized for my tastes I'd rather it be there for when you need it instead of being forced to use it in every single engagement. The very first thing you do in a fight is snap onto cover, you have to since you die so quickly. I may give the demo another run through and see if I can survive otherwise, but ME2 was the same way so I doubt it. Me1 had cover there for when you needed it...
The good, and there was a lot of it - the ME2 styled combat felt fun and looks like it'll be far more varied. Ashley looks smokin' hot, she better be a playable character. Nice to Wrex back too, he also better be playable. Gunplay felt better than ME2, looks like there are weapon attachments too since you pick up a scope for the pistol in the demo (not sure how to equip it though). Graphics are quite awesome in some places, and the shading is superb overall.
I have some gripes on the storyline, I really hope there's more to the opening sequence than what we say, although I doubt it. It's more than a little jarring for the Reapers to just suddenly be on Earth like that, especially after we spent two games thwarting their efforts. Even more odd that Shepard then leaves Earth so quickly, for me that's going to make the rest of the game feel very odd indeed... how are we supposed to take our time doing every little side mission when Earth is getting glassed by the Reapers? Unless this game simply doesn't feature side missions...