I've set up this addon on minibbtest
so everybody can see it in action.
Please note it works with default database structure there, so additional tables are not created. That means it calculates previous or next topic's ID basing on default DB structure. If there are some sticky topics in the forum, they are shown in the list of all topics sorted by latest post ID (default for all guests) or topic ID (if user is logged in and his sorting option is set to "new topics").
If you want sticky topics are taken into attention first, you will need to specify $customTopicSort
option separately for each forum. For example:
6=>array('sticky DESC, topic_last_post_id DESC', 'Most recent reply'),
5=>array('sticky DESC, topic_last_post_id DESC', 'Most recent reply')
mySQL user access also should allow CREATE and DROP commands in the case when temporary tables are created.
The sale price for this addon is $14,99. Contact me privately to get payment details (2checkout or PayPal). We are not going to release this specific thing for the public, so it will remain kind of "exclusive" addon for those who really need it.