Outside of Mackinnon this draft is very comparable to Ristolainen's 2013 class. Barkov and Drouin are in the tier as Patrick and Hischier. Heiskanen, Makar, Nurse, and Risto were about the same class of d-men with Jones slightly ahead of that group.
The 2013 draft is one of the best in the the last 25 years along with 2003,2008 and 2015. The 2017 draft isn't even on the same tier as 2005 and 2006. It will almost assuredly be better then 1996 and 1999 aka two of the worst drafts in league history but the 2017 draft is not a good one. It is comparable to the 2002 draft which was also pretty bad. There will likely be one or two "semi-star" players like Rick Nash from 2002, along with one stud dman (Keith) and then several second line/second pairing dmen. The 2013 draft was loaded.
The star forwards:
MacKinnon
Barkov
Drouin
Monahan
Guentzel
Second line Forwards:
Wennberg
Horvat
Domi
Burakovsky
Mantha
Lindholm
Stud D:
Jones
Ristolainen
Pesce
Solid D:
Nurse
Morrisey
Zadorov
Pulock
Theodore
Again, the 2017 draft is NOTHING like 2013. There are easily 6-7 players from the 2013 draft who I would gladly take #1 in the 2017 draft (MacKinnon,Barkov,Drouin,Monahan,Jones,Risto)