Thomas, I have never owned a game that has had anywhere close to the number of issues this game has. This is supposed to be a finished product. The process for delivering online content is supposed to be second-nature by now. Most games have only needed one or two updates since they were released. The fact that this game is 6 months into it's lifespan and still needs major updates is not something to just brush off. It means the game was never completed and we all paid top dollar for an incomplete product.
As for SlyckTires, I disagree. It is clear that this game was always intended to have a long shelf life due to the epic amount of time it took to make. Playing the same races over and over again is boring. It isn't entertaining. I think 95% of the people who bought GT5, have owned previous GT games and know how boring the same tracks and races are. They bought this game to see something new, not the same old GT. So PD does have a need to keep on schedule with their seasonal events and the OCD.