I’d think it’s just let’s see where everyone is, start with the kids together since they ended strong and that should give a quick direct comparison or where they are after the offseason.
With that decided, Krav with Panarin makes sense since Trochek is more the straight line guy that used to be what they looked for in RWs for that line when Strome was there. Panarin works well with another mostly offense oriented guy on his line along with a straight line player.
Krav and Panarin is going to be a combo that gets like a look for one game and then is never heard from again.
Like if you were going to keep the kid line together, it makes the most sense to flip him and Blais.