To make Germany actually use real life players
To be able to select squad numbers for your team instead of them being automatically selected depending on position
To be able to handle training sessions during international breaks
To be able to talk to players on international break
To have a separate screen for international statistics[goals, assists and whatever] year by year considering they never get logged anywhere permanently
To remove the bug where randomly 1 player gets a red card/injury every game without it ever being shown to have happened in a game or in a news article about it happening in training.
An option to be able to stop club job offers coming in while you are an international manager.