The ability to sticky a post so it hovers at the top of the channel for a period of time say 24 hours (sort of like on reddit).
The reasoning for this is for this is certain events, especially live ones, certain channels are overtaken with conversations relating to that event.
Example: during the Video Game Awards we were talking about the Video Game Awards pretty much exclusively in one channel that is fairly vague.
"Then why dont you just make a channel for that event". Because I want to keep the messages and I also dont want a new channel every time an event happens that essentially becomes dead afterward.