I believe this used to be a popular mod on the old vb. If it helps, I can donate $50, and maybe others want to join in.
This add-on allows you to set a minimum number of posts to download resources!
The number of messages can be selected by category ;)
This add-on allows you to set a minimum number of characters to post a message!
The number of character is selectable by forum.
Separate names with a comma.