There seems to be this assumption with early goalies (Knight/Askarov/Wallstedt) that they are sure fire quality NHL goalies. This is not the case. In each case they are more likely to range between relatively average to replacement level compared to being an all star. Not all that different from forward. We here this every year now that "Goalie This Year is the best goaltending prospect since Goalie Last Year".
You just need to look at the history of goalies taken in the first round to see this. Of all the goalies taken since Fleury it seems Fleury, Schneider, Dubnyk, Rask, Price, Varlamov, Bernier, Vasilevskiy are the only ones to turn into starting NHL goalies and Bernier/Dubnyk are nothing special.
Let's take a look at some quality to high quality skaters taken between 15 and 30 from like 2005 to 2015.
2015 - Barzal, Connor, Chabot, Boeser, Konecny, Beauvillier
2014 - Larkin, Tuch, Pastrnak, Sanheim, DeAngelo, Kapanen
2013 - Pulock, Mantha, Burakovsky, Theodore
2012 - Wilson, Hertl, Teravainen, Pearson, Skjei
2011 - Miller, Klefbom, Murphy, Danault, Rakell
2010 - Tarasenko, Kuznetsov, Coyle, Nelson
2009 - Kreider, Johansson, Palmieri
2008 - Karlsson, Eberle, Carlson
2007 - Pacioretty, Backlund, Perron
2006 - Giroux, Foligno
2005 - Hanzal, Oshie, Cogliano, Niskanen
Plenty of quality players and some depth pieces. Not all of these were considered the greatest drafts yet every single year has at least one first line quality player taken 15+. Nobody knows who it will be. If they did they would not go 15+. But if you don't take one you now have zero chance to get that type of player. Sacrificing that chance to take a goalie who may be good is crazy when it is way easier to find a goalie for cheap who can perform at an elite level than it is to find a skater for cheap who can do the same.