I'm missing the ability to turn on/off layers in the dispatcher map, so you can have more layers related to different types of tasks and turn them on/off as needed.
Some other things
assign multiple workers on a task
workers can see unassigned tasks, and "grab" them as assignment
workers can see other workers tasks, and where other workers are
an option for workers to attach an image to a task, so the dispatcher can see and consider what to do next
the ability for the dispatcher to write in notes, so dispatcher and worker can have a dialog