Oh fuck, you're going to take game direction advice from the same people who post in 1000 page threads about being in love with an alien in an environment suit because she has nice hips? Mass Effect 2 is highly regarded across the board, and anyone complaining that the game was a step back from the first is in the very, VERY small minority.
Maybe some more skills, maybe some more character customization in abilities and job classes, but leave it at that. As a streamlined action RPG, the second game is just about perfect and Bioware shouldn't let some of their their vocal and elitist fans ruin something that could be great.