I have to say, it really frustrates me when I hear any of you say that Mass Effect is no longer an RPG; that it's "Just a shooter". I feel like I've said this a million times, but if you play Mass Effect 2 on any difficulty above "normal", the combat retains all the same strategic RPG elements that ME 1 or KOTOR used... it's just that you have execute your attacks manually.
Watch what this guys does. He is constantly pausing the action, changing weapons and ammo types, coordinating and layering his crew's power usage to bring down targets in a specific and deliberate order. He is doing EVERYTHING you need to do in classic RPG combat, except that he has to aim and pull the trigger manually.
Please guys, I think you really need to take another look at your perception of Mass Effect 2's combat. It's totally cool if you enjoy playing on an easier difficulty level that allows you to steamroll over enemies without using RPG combat elements that the game offers.... But those RPG elements ARE there.