One specific criticism regarding Portugal-Iceland: main squad will not be exactly as considered there. E.g. Cristiano Ronaldo is considered a substitute.. Does it make a difference to your predictions?
The actual lineup does impact the predictions - we will update the lineups before the start of each game, when the lineup is anounced.
In a future version, we would like to make it possible for visitors to change the players in the team, and automatically update the prediction.