It would be great to have a way to lock the panel layout of the dashboard view. I understand that the dashboard needs to be able to adapt to different sizes and shapes of monitor, but I think allowing some administrative control over appearance would be helpful.
I typically use dashboards to contain a filter-detail type layout. I always want the detail panel to be larger, and the filter drop-down to be smaller. Perhaps allowing a user to modify the panes and then set their own “default” sizing would be a good solution.