The Resource Scheduler as functionality where the user can "Expand All" and "Collapse All" to show and hide, respectively, all projects to which a resource is assigned a task. This functionality needs to be present in the Workload Balancer as well.
For example, I'd like to prevent my users from recording hourly values greater than "24" in any day of the week, or prevent users from recording time against a project if they've also recorded Vacation Time the same day, etc.