Add "merge topic" feature to better handle reposts
Removing reposts is sometimes misinterpreted by the user who submitted that topic, and the comments on reposts are often lost when that occurs. So a better way of handling it may be to implement some sort of merge topics option. As suggested/discussed here:
https://tildes.net/~talk/164p/lets_talk_about_reddit_alternatives_shilling_and_tildes_bans#comment-88w9