For example:
Riot: We are looking to do a rework of _________ What ideas do you have for this rework?
Community: (Insert loads of info good and bad)
Riot: We like these ideas ________ for X and Y.
Riot: We dislike these ideas __________ for X and Y.
Riot: What do you think about these possible changes _______?
Community: (Insert more info good and bad)
Riot: Thank you for helping us with the rework on _______. We now have plenty of information and a desired direction based on your feedback THANK YOU!!.
This is one Example
I completely Agree with having in the Mega Threads.
My personal favorite i would like to see is Camera angle, i have been basicly begging for this for a long time. But having a back n forth discussion seems impossible.
http://community.na.leagueoflegends.com/c/ideas/cWdwRLQO-i-want-to-have-a-discussion-with-riot-about-the-camera-angle
These would be an Actual Discussions, letting players understand why something is a good or bad idea should be very important to Riot. As this would allow the community to feel they actually played a part in creating a champion, a Mode, a Map, a Skin, a ______!!
After the discussion is considered done, then Riot moves the thread to its Proper Sub community. This sub community should be Riot posted/started only.
Should also have 1 Thread that is the Top Perma top thread like a sticky thread, that players can post to claiming what Riot should work on next.