Suggestions Forum
Send all suggestions to a forum channel, where users can vote or discuss them.
Suggestion Tags
Use tags to categorise suggestions, and to make them as completed.
Downvoting
Allow users to downvote suggestions
Custom Profile
Set a custom nickname, avatar, banner and about me.
Suggester Profile
When posting to the suggestions forum imitate the profile of the suggester.
Suggestion Queue
Send suggestions to a queue were they can be reviewed before being posted to the suggestions channel.