I've gotta play it again, after I give it a breather and let my initial impressions wear off. I'll do it with my Female Shepard Renegade who made a lot of different decisions than my male paragon.
I have a feeling my opinion of this game will go up. Currently, I still like the game and think its quite good. I did rate it, but, I have to mull over everything before I can form a final opinion, it's good, but a little dissapointing. How much I observe my different actions in ME1 and 2 affecting the story and events will be a factor.
So I think my opinion might go up, in subsequent playthroughs. I doubt it will go down.