Buyout/trade Booth. Trade Hansen, Tanev+ to fill the 2nd line LW/C hole. Go hard after Niskanen this summer.
Sedin, Sedin, Jensen/Burrows
Trade, Kesler, Kassian
Burrows, Horvat, Santorelli
Higgins, Matthias, Richardson
Sestito
Hamhuis, Bieksa
Edler, Niskanen
Garrison, Weber/Stanton
Weber/Stanton, UFA/prospect
That coupled with actual, viable prospects playing in Utica next year and that team is miles better and deeper than this past year's.
That 4th line is arguably better than this past year's 3rd. We'd basically have a 1A/B line then a 2A and 2B line and a 3rd line. Our 3rd and fourth lines also have a R and L hand centreman on each line as well. Ideally we get a LH centre to play on that second line as an option to the RH'd Kesler. That's a quality, deep forward group.
As for our D, while we still lack a true #1D that offers far better balance than what we currently have and is deep as all heck. You've got a good shutdown pair, an offensive pair and a quality 3rd pairing that's good at everything (though great at nothing).
All that's extremely doable even with NTC's etc.