This would be so great. If I am correct this would allow a long lasting discussion on one topic - which now is often fluctating and beeing stopped after a while due to the discussed post moving out of the hot/trending section!
Implementing this would definetly be a huge boost of value then - and it would value the start of a great topic/discussion - Which of course would be awesome as well.

Heading for soccer practice now - when I am back I will definetly check the roadmap! Thank you for sharing this important information :)