A few notes on the tactics.
I'm wondering if Evason would want to do the defensive system they had in Minnesota, we might not have the horses for that. Loose man on man is a good system when the players are in sync with each other and read and react well. It's the opposite of the super conservative zone / box system we had last year. The biggest virtue of zone is that it is idiot proof. Players that can box out a big area like Gudbranson do well in it, they don't have to worry about getting lost in switching coverage. Do we have the guys to go for a loose man-on-man? And how similar would it be to the type of man on man we had under Larsen? I'm not sure.
On the D neutral zone play killing, that's obviously where we want to get to. I'll say though that our forwards have to get a lot better at backchecking, the D are not going to be confident enough to step up if the forwards aren't coming back fast enough. And this is what folks who think Monahan, Fantilli, and Sillinger should be our centers should think about. When you have centers that lack speed or lack defensive detail it keeps others from playing their position, in this case the D-men can't step up.
The Jackets haven't played a consistent forecheck in 4 years. We gave away those horses. I'm wondering if some of these guys might actually make good forecheckers, if we train them to do it. It's a team oriented thing where the F1 and F2 and F3 have to be in sync or the forecheck doesn't work, and you have to do it a lot to be good at it.
I can't think of a reason why Kirill Marchenko wouldn't be a good forechecker with added experience and team structure. Monahan, I get it, he's slow. KJ can do it if he gets faster, his puck thievery more than makes up for the lack of strength. Gaudreau is not going to be a good forechecker, that's why his line will likely carry it in more and rely on Gaudreau's great zone entry ability. Fantilli should be a great forechecker in short order. We'll see if Voronkov's endurance has improved, he's quicker than he looks but you probably don't want him F1 or F2 just because of the amount of ice he'd have to cover, if you're also asking him to be the defensive conscience on his line.
If I was using the lines that you have here, tunnelvision, I'd consider having the centers default to F3, if they happen to break out in a compatible way. Less ice for them to cover.