So all these people grinding, what are you in such a rush to do? So you have raced every car from level 0 to 20? And there wasn't enough XP? What would you do if there was no grinding and everything was unlocked? Finish all the events in one day and never play the game again?
I don't understand this refusal to do any of the events more than once. How many times did we do FR event in GT4 over the years?
In previous GTs there were more and more interesting events - so it was more fun doing them not only once (also i did them often to win all possible price cars ...) And also I liked to do events I liked often with different cars - not so much choice in GT5 (for example the DTM Chalange in GT4 i did with all the different DTM cars in the game, because I liked the event and the cars. The cars I had either won on other events ore bought them - they were available and affordable, because you got some money in GT4 - in GT5 I am lucky that I found 1 of the possible cars in this ***** used cars slot ....
GT 5 is bloated with sooo much stuff - but the most important thing "racing" (yourself and not let b-spec bob do it four you) has been forgotten by the developers.