The problem is in general still Marjamäki. He is simply stupid with his decisions way too often. Some player choices also simply moronic, like Manninen, Jormakka, Pokka, Koivisto and Niemi (well got after all sent back home, as Tolvanen came to the team) are all players whom simply are not good enough to play in this tournament that has so many good NHL players. Jani Lajunen should have been picked to the team for making the bottom lines strong enough with strength and some experience, and Vesalainen and Jokiharju or Juolevi should have been both picked instead of the horrible choice of Mr. Stonehands SlowPokka, whom is honestly an absolutely terrible defenceman at this level. Even what problems the lack of experience of Jokiharju or Juolevi would have caused, their skating and skills with the puck would have made them enormously better players for the team. I can guarantee that it would have been the case even how much some all knowing people here seem to believe in Marjamäki and his stupid choices.
Also using Kapanen in the 1st line is simply idiotic, especially now that Tolvanen came to the team. Kapanen lacks seriously hockey IQ, and also consistency with his puck controlling skills. He is purely an energy guy at this skill level, and should not be playing on the power play at all, at least now that Tolvanen has joined the team. Kapanen honestly seems like a guy who lacks IQ on the ice and also off the ice, and I have also heard quite a lot about how he can be a bit of a locker room cancer with his arrogance and entitledeness. Still probably a useful player as long as he would accept a role as an energy player in the 3rd or 4th line.
The real threat for this team is simply Marjamäki. I honestly have zero trust in that guy as the national team coach. He is simply Late Lammas, whom seems to be lost most of the time. And makes way too much of even completely stupid decisions and choices.