There's one "feature" which really irritates me from time to time, but today it ruined my chances for CL final. It's the delay between saving a substitution and the time when the sub really comes in...
First CL semifinal I lost 0:3 at home - don't mention I had better stats, so it was just one of those troll results... Second leg today, 0:3 at halftime, everything was going fine. It looked like it's going to extratime, but then really funny last ten minutes came. 83. minute - 1:3, so I immediately made an offensive substitution, CB off, third striker on. 85. minute - 1:4, with this score I was going through to the final. But in 88th the substitution happened, so last two minutes, when I needed to defend, my formation was 3-4-3 and guess what? Yes, 89. minute, goal for 2:4 and I'm out...
In real football such a stupid thing would never happen. What about adding a possibility to cancel saved, but yet-not-made substitution, when the score changes? It would be really nice...