These reviews need to be taken with a grain of salt, especially because there have been teams in the past that have had ridiculous prospect depth that ended up producing nothing while there have been clubs that have had middling prospect depth that have produced players.
For me, where a player plays in their development is so important. For instance, when a player comes out of a good junior program or NCAA program, they're coming in with good habits in terms of two-way play, playing compressed schedules and just playing a lot of hockey. Most important, a lot of them come with good habits already established in terms of practice, physical fitness and nutrition (especially the college kids). When a player comes from a poor program, the work required to get them to develop good habits is what takes a lot of time.
Of course, having a good farm system and development coach in place is paramount for these kids to succeed. And that's a glaring red flag that the Flyers have. Laperriere might be a good guy and is well liked throughout the organization. But his development coaching skills leaves A LOT to be desired. And if the Flyers are serious about building through the draft, them they need to find their Benoit Groulx (look at the job he did in Tampa Bay when he was their minor affiliate coach).
That's what scares me most about the Flyers. The draft seems to be ok, but the development leaves tons to be desired.