The Athletic did an article listing what the writer thought was each team's worst draft based on who they picked and who they missed. Here is the Islander entry.
New York Islanders: 2011
They could have had: #7 Mark Scheifele, #58 Nikita Kucherov and #104 Johnny Gaudreau
Instead they picked: #5 Ryan Strome, #50 Johan Sundstrom and #95 Robbie Russo
Admit it, you were expecting the Islanders to clock in with a Mike Milbury draft. Instead we only have to go back to 2011, as three 80-plus point forwards slip through their grasp. And it doesn’t stop there; they could also have picked #39 John Gibson and #64 Vincent Trocheck instead of #34 Scott Mayfield and #63 Andrey Pedan.