I'd like to do some fine-tuning of the layouts, and my idea is to write some script that in loop starts the data field in the simulator for each device then it follows a script, like:
for device in devices:
click_button(up)
for layout in device's layouts
change_layout(layout)
screenshot("screen1-$device-$layout.png")
click_button(menu)
for layout in device's layouts
change_layout(layout)
screenshot("screen2-$device-$layout.png")
Then I can look at the images and spot obvious layout problems that needs to be fixed.