I have suggestions for better UI of threaded layout.

  1. Modifying UI of threaded layout - Adding "Likes" row besides "Replies" row

https://imgur.com/a/RMrhJgZ

"Likes" row can let users know how much topics are popular and it can be extended to widget like WPdiscuz's widget does.

  2. Widget

https://imgur.com/a/68AkP9S

Like Wpdiscuz widget,

Tab1 - Most Liked Topic(except replies)-time frame-(1day, 1week, 1month)

Tab2 - Most Commented Topic based on the number of replies-time frame-(1day, 1week, 1month)

Tab3 - Most Trending Topic based on the view counts-time frame-(1day, 1week, 1month)

Tab4- Most Liked Replies-time frame-(1day, 1week, 1month)

  3. Modifying Replies UI:

      1) Adding filters and search bar before replies so that users can search with ease when there are a lot of replies. Wpdiscuz does: https://imgur.com/a/HcCAeiu

     2) Remove reply's title - It does not helpful at all, and it prevents from exact search results. Like other forum plugins, reply's title is not necessary. Please remove reply's title entirely.

  4. Modifying Search Features:

     1) Advanced search option: https://imgur.com/a/WDXRTH4 - Add option to filter: "Search Topics' Title Only", "Search Topics' Body Only", "Search Topics Entire", "Search Replies' Only" and it would be great "Search Topics' Title Only" or "Search Topics Entire" as a default option.

    2) Please select the current forum automatically, while searching, not entire forums: https://imgur.com/a/uZxJMsC

    3) "Sort Search Results by: Date" as a default option please, not relevancy first: https://imgur.com/a/lYFGDEa

  5. Move "Add topic" on the front page: https://imgur.com/a/lOmYv3q  

  In the front page, "Add topic" exists on the thread layout forum only. Move this button to the above forum category so that users can add a topic at any category, not only in the thread layout forum.

  6. Make category have various layouts: https://imgur.com/a/to64fVh Layout which inherit from parent category limit the style of forums.

  7. Trivia things to fix

    1) https://imgur.com/a/3sM7XOw <div class="wpf-topic-visitors"> HTML block under the <div class="wpf-topic-navi"> is left even I turn off the "Current viewing" option.

    2) https://imgur.com/a/Xu9Vrba When the main category has only one forum, "Forums" navigation is not required.

    3) https://imgur.com/a/3gTugrI Like previous case, if there's one forum only, there's no necessary to select forum while adding a topic in the category layout. 

    4) https://imgur.com/a/qGgF79k I turned off the Subscription option from members, however, Subscription is left under the "My profile" tab and Buddypress tab.

    5) There's no option to remove "Unread Posts": https://imgur.com/a/wCsDNKc

    6) Buddypress notification is not cleared(removed) after I clicked the notification regarding new replies on my topic.

I hope you support those things for better UI and UX.

Many many thanks for your great plugin. I cannot thank you enough. 5 stars just isn't enough 😀