Some suggestions I got from other forum
1. Keycode -> Skill / Monster Image / Unique Items
Not sure what the correct term, but you can check Liquid Hearth where when you hover on specific text, a picture come out for card details.
For skill in median, you can pop up skill icon, clvl req, class user.
Best for unique / set items IMO.
2. Shop / Procurement / Indexer
Not sure if median current user base will make full use of this, but basically just a way to upload your selling / buying stuff on forum.
Then you can search specifically throughout all user's shop for good bargain.
Used intensively with PoE before, I think it is a neat addon for realm player.
3. Better quick reply
Older forum have some stylizing without need to go to full editor. I used them a lot, I think it is useful
Thats all for now.