It would be useful for the Special:Export page to accept wildcards in the list
of pages, e.g. "Help:*" to export all help pages, or "MyProject*" to export all
pages relating to a particular project you are working on (including sub-pages).
To be 100% useful, this would need a special alias for the main namespace, e.g.
a colon. This would mean that ":*" would export the entire main namespace,
whilst "*" would export the whole wiki, and ":help*" would export pages in the
main namespace beginning 'help', but nothing from the 'help' namespace.
It would also be useful to have an option to 'include talk pages' so these do
not need to be entered separately.
(apologies if either of these features available, but I found no mention of them
in the manual or interface text - which incidentally still claims that there is
no 'import' function).