Generalize DFS_PERMISSIONS_SUPERUSERGROUP_KEY for any HCFS

HDFS has configuration option dfs.permissions.superusergroup stored in
hdfs-site.xml configuration file:

<property>
  <name>dfs.permissions.superusergroup</name>
  <value>supergroup</value>
  <description>The name of the group of super-users.</description>
</property>

Since we have an option to use alternative Hadoop filesystems (HCFS), there is
a question how to specify a supergroup in such case.

Eg. would introducing HCFS option in say core-site.xml for this as shown
below make sense?

<property>
  <name>hcfs.permissions.superusergroup</name>
  <value>${dfs.permissions.superusergroup}</value>
  <description>The name of the group of super-users.</description>
</property>

Or would you solve it in different way? I would like to at least declare
a recommended approach for alternative Hadoop filesystems to follow.