What if we had a sticky post for ideas or suggestions - Where each idea was numbered and the idea was outlined - but not comments were possible.
If you or someone else wanted to provide more details, screenshots, explanations, respond or start a discussion you could create a secondary post with reference to the idea number. (e.g. #15 Feature Request - New Minigame)
This would allow for all new ideas and suggestions to have a central common home, but still allow for a more detailed discussion or ideas that people wanted to comment on. It would aid new players/forum members, allow for easier search and assist in allowing all ideas to be catalogued without getting so easily lost in the daily barrage of new topics.