Coming from FM22, I think the game on a whole is a significant improvement. The Match Engine is much better. I can manage positional play and see fluid tactics in action much more easily. I enjoy a lot of the new additions like the squad planner, supporter vision etc (albeit I know these were also in FM23). However, I've scrapped the long-term save I started because there's two noticeable bugs that is affecting the game:
1) Too many goals. Funnily enough, in my own league (the SPFL) this wasn't manifesting so much as ridiculously high-scoring games as it was a lack of clean sheets. Even Rangers and Celtic were conceding a goal a game, even though their XG against were overall low, which suggests other teams were finishing low-XG chances too consistently. I was also seeing a lot of high-scoring games in the Champions League qualifiers, including two 3-3s on the same night. In the past, FM's could sometimes be too unrealistic the other way - ie too many clean sheets or low-scoring games - but the balance clearly isn't right. However, I think this might also be linked to the 2nd bug...
2) Inconsistent use of subs. It's not that the AI never makes subs. Sometimes they do - Kilmarnock made 4 against me. But too many times they don't make subs at all, or they only make subs in the last 5 minutes or when someone gets injured. In the Community Shield game, City won 4-3 and Pep made one change, in the 96th minute.