Is there a way to change the extruder on filament run out. In the near future a go to print a great project with for example 4kg white, 5kg red, 8kg grey, … It will be fine to use every roll until the end without pay attention the whole day.
This Backup mode could be a feature suggestion, share it with snapmaker and see if we get it in the future.
https://snapmaker.formcrafts.com/support-ticket
Or email to support@snapmaker.com