The most important thing to know about dump-ins is, what % of pucks dumped in do you recover? If your recovery rate isn't good, it's a strategy that will be tough to succeed with. You will be hurting your possession game. Some players are better suited to retrieve dump-ins, while some are excellent at keeping possession crossing the offensive blue line. You shouldn't have a 1 size fits all system, you should determine which lines dump the puck in based on the individual lines effectiveness in these 2 different areas.
The problem is, too many coaches try to make the personnel fit their system. A smart coach will make the system fit the personnel. Doesn't sound like that was at the forefront of Bylsma's thought process - which probably isn't good.
This is a great point, and a lesson I wish Tortarella had learned before we signed him to coach the team.