I doubt we'll see a team with a ton of up-and-coming names. Some young players may well feature, but they'll have to be ones with enough time to join the team for some preliminaries - so someone like Niemelä could well get a camp invite and then it's up to him to distinguish himself enough to break the final roster. However, if there are some fringe NHLers or young AHL guns who might technically become available by being eliminated a week or less before the puck drop, Jalonen won't take a shot at them if the practice game window has already closed - especially if it would mean clearing out some of his familiars.
What they will undoubtedly do is see if any established names get eliminated from the first round. For example, if Florida happens to stumble in the first round and Barkov wants to take the opportunity to play in his hometown, of course they'll want to keep that possibility open as long as they can.
If we look at the potential big names who might not make the playoffs, I'd say Hintz looks like a likely yes. It'd be a hometown tournament for him too. And he might just drag the rest of the Dallas cohort with him. Regarding yet another hometown hero Laine, I recommend waiting and seeing, as he's on a bit volatile ground right now. While he's technically without a contract, he's still guaranteed at least one that gives him an additional year with the same salary he makes now. Laine's odds of joining actually depend more on Jarmo Kekäläinen than Laine himself, at least for the time being - as right now any possibility is open: Keklu might kick the can down the road and extend Laine for that year, he may offer a multi-year contract, or he might trade him - and it'll likely be a contender in such a case. So I wouldn't pencil Laine into the lineup before the trade deadline.
From Europe, any players from the olympic team who'll want to join will likely be given high preference, especially in the absence of an influx of established NHLers. And the next tier in importanve will likely be the other Jalonen familiars.
Regarding goalies, I'd say that if Säteri wants to join, he'll likely be given the starter job even if there are also NHL names available - sans for the scenario in which Nashville bows out early. The same might apply for Olkinuora. Not that there are many names from overseas who might be available in the first place. Now, two curious cases, if available, might be Lankinen and Korpisalo - both pending UFAs, but both also not in a great negotiating position. However, out of those two it's almost a given that Korpisalo won't be availaible - as he's 100% getting traded before the deadline. Elvis won the race for Columbus' starter, so Korpi will walk in the summer - and Jarmo won't be letting him go with no return at all, even if it's just a seventh round pick and a bag of pucks. Lanks might be a different story, since Chicago's goalie situation looks wide open with MAF likely retiring. Of course, if someone wants to rent Kevin, I don't see why they'd say no.
Won't be drawing any lineups, but here's a list of some potentially available players I could see Jalonen building this team out of:
Goalies:
Lankinen
Säteri
Olkinuora
Tuohimaa
Only listing those with a chance to make it between the pipes. For third string, someone like Heljanko or Westerholm might also well make it. (Of course, the situation might change if our euro usual suspects find themselves satiated after the OG.)
D-men:
Heiskanen
Lindell
Hakanpää
Jokiharju
Hatakka
Vatanen
Lehtonen
Lindbohm
Pokka
Kaski
Ohtamaa
Friman
Koivisto
Honka
Niemelä
Centers:
Hintz
Manninen
Filppula
Aaltonen
Björninen
Kemppainen
Nättinen
Kossila
Ruohomaa
Wingers:
Donskoi
Kiviranta
Armia
Kuokkanen
Borgström
MaG
Hartikainen
Pakarinen
Pesonen
Ojamäki
Rajala
Mäenalanen
Anttila
Savinainen
Levtchi
Karjalainen
Turunen