OK, so after Canada game I have to say I dont know what is exactly Erat's purpose in this team except few passes. First and third line were almost invisible in this game. I ussually bash our defence. However they werent that bad. Especially the first line has to improve a lot, otherwise we can not be a medal contender this year Imo...
Erat is a big black hole on the first PP unit. I'd vastly prefer Hertl or even Červenka instead of him. I'm sure Růžička can see that too but he probably doesn't want to show all his cards before the games get really meaningful.