For the anti-depth chart, or indifferent contingent: it is a form of evaluation by the coaches of how well the players progressed through camp. There are a lot of new faces and many positions according to Cristobal have been hotly contested. I for one would like an indicator of how things shook out based on the staff's evaluation. A depth chart is an evaluation of each position group.
Now, of course, we will see the team tomorrow, but It's difficult to thoroughly track who's in the game, as well as evaluating position by position during a single viewing. My guess is there MAY be some very disappointed young men when/if the chart is released and the closer to kickoff it's held keeps everyone on board. Then once guys see significant snaps, starters or not, disappointment will be mitigated.