Ducky, and (barely) Gartner. That's it, end of discussion. NO Cam Neely, no Kevin Lowe. They were never among the very best to play the game for ANY stretch of time, let alone as all-time greats. Hawerchuk was one of the top 4 players of the 1980's and early 90's, scored over 500 goals (even though he played on some TERRIBLE teams in Winnipeg and Buffalo and Philly

), and was a total class act his whole career.
Neilson can MAYBE get in as "builder" in a few years, but over-all his coaching record was not good. He had a LOSING record, actually. He was a great innovator, though, and for that he deserves consideration. And if he makes it, I won't be upset. Far less worthy people are in there right now.