Only generate layers once
Separate control layers. Only they are visible in the layer switcher
args[0] == name stuff
Give generated layers a random name
- Select cell based on time range, not just end time
Keep track of number of start/completed frame loads
Made progress indicator cells survive reloads

- Reuse old cells for appropriate intervals
Add legend information to layers
Remember errors
Reinitialize cells in correct location

 - Actually, always create new cells, but copy attributes from matching old cells