Filament hot swap

Now that we have done some big prints I started to wonder if we could use the Prusa MMU2S for hot swapping the filaments during long prints (and why not multi color printing for that matter too). The SuperVulcano consumes a one kilo spool fairy quickly, so it's not possible to span the print over the whole length of the night. We are doing a lot of prints that are tight on schedule, so we would like to be able to print 24/7 without loading too often new spools. What kind of changes the firmware would need?

im interested too