To make sure that the forums remain relevant and fun,i suggest you to add to users the option for Level up,something like based on the trophy Points
Example: 1-10 trophy points and you reach level 1
10-19 For level 2
20 - 30 for level 3 and Etc the level up to be based on trophy points,likes and activity
Another forum Suggestion: To encourage new users to read the major threads and stickied posts, new users to not be allowed to create new threads until they have replied to at least 5 threads first.
Example: 1-10 trophy points and you reach level 1
10-19 For level 2
20 - 30 for level 3 and Etc the level up to be based on trophy points,likes and activity
Another forum Suggestion: To encourage new users to read the major threads and stickied posts, new users to not be allowed to create new threads until they have replied to at least 5 threads first.