For me, there are major problems with the custom chants, music and some areas of the audio this year.
The PA system is too quiet - you can barely hear it. The custom chants are also too quiet - I increased their volume using MP3Gain last year - how much higher can they go before the audio quality goes out of the window? Same with the player calls, they're almost inaudible this year.
Seems to me that the audio sliders are broken: having custom chants at one or ten makes no difference - and as an added bonus, I've found that the entrance music can go on for half the game, instead of cutting out immediately upon kick off. Seriously EA, there was nothing wrong with that aspect of custom chants last year - why mess it around?
Oh, one other thing. Last year, the entrance music had a cool 'reverb' effect, which made it sound like it was coming out of the stadium's speakers. Not now - why change things when they're fine, EA?