As for this whole "Jost vs Boeser" debate.
You are talking about 2 different players, I've seen them both play extensively throughout the season. Jost, could be considered more of a "driver", but still hasn't driven the play that much where I'd call him a driver on his line. He does however, have the ability to drive the play. In the NHL, I can see Jost taking a similar PPG and playstle to say, someone like Kadri.
A 2-way center consistently getting around 50 points, with a nice shot and some playmaking abilities. Which to me would be perfect fit in Colorado behind Mackinnon.
As for Boeser, I see him more as a supportive piece then Jost. He doesn't drive the play as much as Jost, but he's not that far behind Jost in that regard either. He has a stellar shot, but is a slower skater then Jost, not a "slow skater", unless you'd consider someone like Vrbata a slow skater (I think Vrbata/Boeser are comparable skating wise).
I think Vrbata and Boeser share a lot of attributes, they both shoot from basically everywhere and have that goal scoring instinct. Having watched Vrbata over 120+ games here in Van I think that Boeser and Vrbata will probably play the same type of role in Vancouver at least. Saying that, I think Boeser probably has the potential to be a top 6 sniper/supportive player kind of like Vrbata is. Putting up consistent 20+ goal seasons playing on the 1st unit PP and first or second line. He won't be a driver of the offense, just like Vrbata wasn't a driver of offense, rather he'll rely on others to get the puck on his stick and he'll shoot.
But saying that, this all depends on them developing up to their potential. I'm making no claims that these players will reach their potential. It's incredibly hard to predict where these 2 players will end up playing and what their roles will be in the NHL. One of them, or even both, could end up being busts and I'd look incredibly silly. I'm just trying to give my 2-cents about these players.