As a huge Mass Effect fan who is massively (forgive the pun) invested with this series, I am imensely happy with how the demo turned out. I can barely stand the wait for March 6th!
I do agree that being able to walk around and talk to people before the meeting would have been great. Perhaps we could have run into a few friends and talked before heading to the meeting. But I understand the urgency, if the Defense Committee wants to speak with you, I can't imagine that gives much time to stroll around.
The combat and movement took some getting use to, but once I got the hang of it, it was a blast. Peaking around one corner, disorienting a cerberus agent, and then rolling out of cover, sprinting up to him, and taking him out with the omni-blade is incredibly satisfying.
The graphics look incredible, and with each run through of the demo I was torn between taking in the gorgeous (and tragic) visuals of the Reapers descending on Earth, and moving on with the demo.
I don't think I need to repeat anything about the sounds and music. They speak for themselves.
Overall, I am unbearably excited for the full game. It was short and had plenty of content missing, but was just what I need to get me excited for the whole thing!