There should be more display options available. The admin can of course turn on and off every display option for "Display Options" for all and/or per user group.
Such as these.
View Only topics with:
Polls.
Locked.
Attachments.
Calendar event.
Moved.
Hot.
No replies.
At least X replies.
Rated X.
Rated X or higher/lower.
Make it possible for admin to choose which periods in "Show Topics". So the admin could add for example: "X years, X weeks, X days".
Also. Make it possible for guests and other user groups to choose the amount of topics per page and perhaps replies per thread in "Display Options". Also let guests turn on and off the left and right portal blocks and certain blocks with a cookie, perhaps in "Display Options". So a box everyone can click on "Remember this". For guests it will be as long as they keep the cookie and don't delete it. For users it will be as long as users don't turn it off, of course.
Another useful thing would be "User browsing this topic" and "Users browsing this forum" (Such as Feedback & Suggestions for example).
And "Similar topics" beneath each thread, so it would be some kind of system that looks up similar keywords.
Make an archive for the shoutbox, that the administrator can turn on and off.
"Who's online" should not just be able in a block. It should be able to be in the bottom of the forum if you want. You can of course edit the template and insert a link to
https://www.ubbcentral.com/forums/ubbthreads.php?ubb=online, but it would be very useful in the bottom of the forum main page.
Only allow mark as edited to be unselected, for some groups and make it a permission.
Just show the available payment subscriptions (on the system that comes with 7.3) to specific user groups (This might already be in 7.3).
Being able to go to years before the current year in the calendar (or at least those years with at least one event added should be shown in the dropout menu. It's much faster than going through each month.
And being able to search each topic. It is very useful if you have many pages. And an option to always have "View all replies in one page" on, that could also be a permission.
So more display options, and being able to choose which ones per user group/permission.
A lot of suggestions (some might already be included), maybe a little bit confusing.