It's not only the day/night thing.
Konami have a weird way of thinking. In order to play Champions League in WE8 you need to setup the league of (whichever) four you wish to play and as soon as you finish that, setup a (Konami) cup of 16 with whichever teams you like (unless you play all 8 groups). At least they thought to set the final to be a single game at WE8 when playing Home and Away matches. This thing could 've been solved if the choice to have a Home/Away match in the Groupe League cup type was there, but for some reason it is disabled.
Apart from that, when playing in League Mode the venue seems to be random, not the stadium that the home team uses.
Correct me if I 'm wrong, but I don't think patching can mend that stuff. It seems you can change stuff related to the data (like graphics, sound and text) within the various databases of the game but not the structure (the way the game works).