I don't know if it has been discussed MMB, but in reality how much of the sub-par drafting is truely PC's fault?
Yes, he makes the final decision, but it is the scouts' jobs to provide the details, and give him an honest analysis of the potential prospects. He may go and review some prospects when given the chance, but I truly believe for him to be successful in that arena, he needs to have trust in his scouting team.
This leads me to the fact that some of the scouts have indeed been replaced. PJ Axelsson is now only in his second year scouting amateur players in Europe, Blair Reid is now doing the Western Canada scouting, Keith Sullivan was added around the same time as PJ to add to the US amateur scouting, and Keith Gretzky is only in his second year as director.
A lot of the changes happened 2 years ago - when, coincidentally, it was brought to light some very poor drafting previous to that (eg. Hamill, Colbourne, and others who made zero impact to the Bruins).
Looking at the new scouting regime, the top two picks in each year have been Pastrnak & Donato (1 already up with the club) and Arnesson & Cehlarik (both looking good in their development).
All in all, I see it not as an issue with PC, but with the scouting staff - and this issue has already been addressed - let's hope this scouting group continues to provide the value they have already shown in just 2 drafts.