So many choices...
MacKinnon: probably the most damage I could do to a divisional rival with one quick strike.
Matthews: increase in personal satisfaction from watching a certain fanbase melt down.
Subban: still not over last year's playoffs.
Fleury: the above times 95, which is somewhat close to Fleury's SV% against the Jets in round 3.
Heiskanen: similar case to MacKinnon, but with the added benefit of getting rid of a couple extra years of him compared to MacK.
Ceci: potentially the worst defenseman in the league. Truly deserves a mention, him.
M. Tkachuk: getting ahead on making one potential playoff matchup bearable for the next decade.
Marchessault: nothing against the guy, but it would only be fitting for him to have such a interesting career path to the top, only to be wiped out by a random linguistics student in a blink of an eye.
Going with MacK. Remind me to choose Hughes next year.