I hope one of the things they do is make better use of subvolumes. If you look at the way SUSE handles btrfs it's night and day compared to everyone else.
They make a subvolume for every traditional unix partition and the system takes automated snapshots so you can rollback the system to older configurations. I don't actually run opensuse but I've dabbled with it specifically to see how they setup btrfs and you can just tell they're invested in it.
You can snapshot them independently and if you want you can set quotas to size restrict them. Although that latter point defeats one of the advantages of subvolumes over partitions. So really just the ability to snapshot them independently