Boqvist has a huge ceiling. Personally, I'd like to have him on PP1 as I think he's far better at keeping the puck in and making quick decisions than Werenski. But looking for his long-term fit here, things get a bit murky.
I think the plan for the next two years is to figure out if he's a good long-term fit while also keeping a close eye on Mateychuk's development. If I had to rank all of the defensemen in the org by who has the highest ceiling, it probably comes out to something like this:
1. Werenski
2. Jiricek
3. Mateychuk
4. Boqvist
5. Ceulemans
6. Gavrikov
I alluded to this earlier but I think going into 2024-25 the org will have to choose between Boqvist and Mateychuk. If all goes well, whoever they don't choose will be one heck of a trade chip.
Similarly, I think Jiricek is going to be a straightforward replacement/upgrade over Peeke in a year. Peeke has a ton of heart and I think everyone here loves the guy, but I don't think he goes above Jiricek, Boqvist, Gudbranson or Blankenburg. Luckily, being a big RHD with team control, he should be a pretty valuable trade chip. Romanov got a top 15 pick, maybe Peeke could fetch a first rounder at the draft next year.
Even if they move both of those guys, they won't be hurting for defensive depth. Behind Werenski, Jiricek and Mateychuk, they'd still have Gavrikov, Ceulemans, Gudbranson, Blankenburg, Christiansen, Richard and Svozil all vying for a spot.