Just a few more comments;
Admin side:
There is no Report Post button. (May have been left off purposely?)
Maybe not crucial but there is no delete button in 'Manage Attachments', I've seen this before so I know that its a Usergroup setting.
It will need enabling for all usergroups to let users delete their own attachments.
I've not tried how the flood control is on searches, (how long you have to wait between searches), but again that is now a Usergroup setting.
User side:
You may notice there are no Post numbers. For some reason Post numbers are not standard in ICS.
(There is an add-on but Dave may probably want to keep things simple, without add-ons for now).
If you want to give a link to a previous post then right click on it's date and 'Copy Link Location'.
Another trick with the post date. - If it only shows 'Posted # minutes ago' or 'Posted # hours ago' you can hover over it to see the actual time it was posted.