Most importantly is the paid subscriptions. The ideal scenario would be this:
A forum user clicks 'become a full club member'
The user is asked to enter their personal information using some custom fields (Additional to any info collected upon registering to use the forum)
The user is asked pay via paypal.
The user is assigned the next sequential membership number and is sent an email with the number included in the welcome message.
The user is assigned to a new group where they now have access to additional boards / features.
A second reduced price tier can be assigned to club representatives manually.
Other features I'm keen to see are:
A shop for club merchandise.
Facebookesque features such as
Like, comment and share.
Tagging and notifications
Easily mass upload/attachment of images and other media to posts including server side recompression / resizing.
Live chat features including audio notifications.
Our forum usage has declined rapidly over the past year due to our Facebook group becoming so popular.
They work well together but I'd like to see people back on the forum as it creates more of a community vibe.