I don&#x27;t mind having a filesystem that works reasonably well on most devices. But I would consider &quot;being able to append to a file reasonably quickly&quot; as part of that &quot;reasonably well&quot;.<p>Note that it&#x27;s entirely possible to have a filesystem that&#x27;s actually several different filesystems with a magic selector. (I mean, block sizes and reserved block percentages and inline inodes already are along those lines)