So I've bought every single car after earning enough credits with the Le Mans trick someone posted earlier (thanks for that!). Took me nearly a whole morning and afternoon, but you know, it was worth it.
Finished only the second series in career, spent more time in multiplayer which is really good but takes too much time to finish one race with the practice and qualifying before a race so I hope they tweak that a little so you can enter a MP race faster. But what I like playing the most is Rivals mode, the new mechanic where automatically the next rival is picked from the leaderboard once you beat a rival is addicting as hell. I like to level up every car in a class to a level where the car can be upgraded to the max level in it's class. I'm halfway through the E-class cars, but with the new patch unlocking stuff will be faster.
Playing on XSX I have experienced a couple of return to the Xbox dashboard crashes when buying automobiles when pressing the shoulder button to skip brands fast. I also once had the infamous doing a quick upgrade after the race that the game gets stuck and you have to quit out and when restarting the game again you lose the last race progress you had, so I made sure to only upgrade at the start of the new race, but than I never experienced that bug again. I love how the driving feels, graphics to me are great, sound is such an improvement too. The whole dynamic weather day cycle is awesome, I hope they'll add endurance races soon will make it interesting having to pit too.
FM will act as a platform where new tracks, automobiles and new series will be added over time which will keep the game interesting to play. The way Xbox is handling these type of GaaS games is superb as we have seen with Forza Horizon 4/5, Sea of Thieves, Halo Infinite and State of Decay II etc. They're all much better games now then when they released so I don't question that FM will be the same.