Feature request: Boot default subvolume in BTRFS

[Thomas]

    Hello,
    
    this is the description of my feature request:
    Grub is booting the default subvolume in BTRFS w/o any manual
    modification in Grub configuration.
    
    Current situation:
    Booting a snapshot created with Snapper is
    not possible w/o modifying the Grub entries.
    This is related to the Snapper functionality that creates a ro
    snapshot that must be booted and then creates another rw snapshot of
    the currently booted ro snapshot. Then Grub configuration must be
    recreated to reflect the newly created rw snapshot.
    
    Available solution:
    In OpenSuse Grub is always booting the default snapshot and hereby
    Grub configuration must not be adjusted.
    To my understanding OpenSuse uses a patched Grub.
    
    Regards
    Thomas