Loved the game overall. Would have rated higher if it wasn't so 'dark' a game.
I'd sure have loved to see that feature in GTA4 because I quit that game when I couldn't get through a game-blocking motorcycle chase.
The only thing else important for me to say is my disappointment that the whole game turns out very 'black' indeed--through and through. If only I could have made choices at certain points for a 'good' story outcome I would have probably gone for a 10 rating. Instead I finished the game feeling sad and empty once again. The only saving grace is knowing that this is exactly how the human race has turned out so far--greedy and mean-spirited and murderous given the chance.