[xwiki-users] securing xwiki MySQL user a little

Hi, It is mentioned in the documentation "Give all privileges to the xwiki user for accessing and creating databases" - because the user to be able to create additional databases for sub-wikis ; but isn't it a little pushy to give *all* the privileges (Grant, reload...) to the xwiki user ? How could I secure the xwiki mysql user account a little more ?