I think European football in Fifa is very disappointing. Although EA don't have the Champions League licence due to Konami's 4 year exclusive licence with UEFA if they made these enhancements we could have a close to official experience even without the licence.
1. Editing. Option to edit the names of unlicenced Tournaments so the ECC can be renamed to it's real name.
2. Night Matches. All European matches played at Night. This would obviously require the Night feature to be added to all stadiums but hopefully that is something EA are working towards doing anyway.
3. Commentary. The Commentators should be fully aware of the situation in 2 leg tie's. So if your playing in the 2nd leg and it's 2-1 on aggregate they will talk about how the tie is on a knife-edge and mention crucial away goals, etc..
4. AI. The CPU plays a slow, methodical and more technical style of football so matches feel different from League games.
5. Custom anthems. so the UCL anthem can be played before each match. This should be easy to add as it would just be a matter of playing an audio file.
6. Custom balls. So the
UCL ball can be used in matches. Not a necessity but it would be a nice addition.
7. Custom ad boards. Which can be assigned to Tournaments of your choice. So if you create the UCL boards they will only be shown in stadiums in UCL matches.
8. Trophy Celebrations. Showing your team lift a Trophy which is very similar to the UCL Trophy and players being presented with medals.