The ebbs and flows of every training camp are the same every year. The excitement of the first scrimmage wanes when you realize the intensity is lacking. In terms of evaluation, there isn’t much you can take away from it. Players can impress, but it’s really when you get into the pre-season that you can get a better look.
Pre-season isn’t foolproof either as some veterans just want to get to the regular season healthy, but you can make an impression. Michael Pezzetta is the best example from a year ago. He thrust himself firmly onto the NHL radar and made his debut a few months later.