Add-on Thread Creator limiting new replies/guest viewing per thread

Live Free

Active member
I'm looking for a few add-ons.
  • The thread creator can allow or disallow new posts (himself excluded) in "their thread" within specific forums
  • The thread creator can choose the thread viewing permissions, making it viewable publicly/to guests, or only to members, on a per-thread basis within specific forums
Do such add-ons already exist?

If anyone's interested in developing these, PM me.