I really think there's a deal to be made with Boston. Seems like most Jets are just so-so with Spooner, however, and most Bruins aren't keen on trading Carlo (and if he's playing as well as Morrissey right now, how can you blame them).
If you can trade up to a top 4 of:
Krug - Trouba
Chara - Carlo
wouldn't that be the ultimate? That's what you have depth for in an organization, so you can make these trades.
Jets have been after a top line LHD, but that very likely won't happen. Alternatively, I'd be keen on them getting some depth on D (and maybe a future D-man with at least potential to have the upside that Trouba has).
Here's a possibility to consider that allows you guys to greatly enhance you defense, while keeping your forward strength. What would you think of this:
Zboril (LHD prospect)+ Lauzon/McAvoy (RHD? prospect) + 1st.
I know this digs somewhat into your defensive depth (plus I know that many fans in Wpg would object to just getting prospects in a deal). For sure, this is a step down from the OP (Spooner + Carlo + 1st), but maybe something that meets our future needs better, and allows us to go 3D + 7F for the expansion draft.