I've two suggestions for the Custom Help Pages in XenForo 1.4.
I think it would be very helpful if there would be child and/or sibling pages for the main page, like the Page in the Node Tree. This could be very helpful for e.g. tutorials of the forum usage.
Besides it would be great if Custom Help Pages could definied for usergroups and will be just shown for them. For example you create a tutorial for moderators. For normal users this is not interesting so only moderators can see the Custom Help Page. You can take this example for unregistered visitors or special usergroups, too.