From what I tried to understand of this post, I think you're saying that because Hawk-Eye is in the game, it means every LBW decision will be accurate? Just because Hawk-Eye is there doesn't necessarily mean every LBW will be an accurate decision.
I feel it would add something to the game if the umpire doesn't always give an accurate LBW decision. Say if the umpire gives a appeal not out, there could then be a replay using Hawk-Eye, which infact shows the umpire got it wrong. Then whoever happens to be commentating at the time say's 'oh thats a bad mistake' or whatever. With Hawk-Eye there to show maybe the umpire got it wrong, and a couple of lines from the commentators saying it was a mistake, maybe people won't think it's a bug in the game. Which is the danger with incorrect decision's in games.
Ok, it may infuriate a few people when they find out the in-game umpire got the decision wrong, but it would add a more 'real' feeling with the game. Afterall, most of us are after a cricket game that 'feel's' as close to reality as possible.
