I honestly have no idea what this is game is...and that there was a first one?
Obviously you haven't owned an Xbox for very long, or read too much into any of it's games. Since the original Mass Effect has been out for 3 years and has been hailed as a must have for quite some time.
Also, I hear there's alot of issues with the DLC and the downloadable armor. You have to link your gamertag with your EA account to get the armor and the DLC and I'm not able to link it together.
Also, apparently you can't take your helmet off of the downloadable armor.
Glad I got it on the PC now.
The reason they are doing that is because they want you to create an account on the Bioware social network. That way they can prevent any sort of piracy with the game and it's DLC.
With the Terminus armor (only with purchase from Gamestop). I highly doubt they would "fix" it and allow you to remove the helmet. That would require them modifying the model, and it's far to much of a hassle for them. Plus the armor wouldn't look that great if you could, as the helmet makes Shepard look more intimidating.
Anyway, after playing this game for the entire day, I must say I am VERY impressed. Bioware really outdid themselves with this game. To put it into perspective. If you ever played both Saints Row 2, and the original. ME2 is to Mass Effect, like Saints Row 2 is to Saints Row. Just a gigantic improvement in almost all regards that obliterates your original complaints with the original. The gameplay is far more refined and less repetative, the environments gorgeous and detailed, the party members and characters interesting to talk to, the player choice involved, everything is just a major step up from the original. I would definantly recommend purchasing this game, even if you are given a choice between this one and the original. Because it squashes the original in every single regard.