Curation Idea: Look to "Scoop" a blogging platform from the early 00s.
0-4 voting:
0 - Troll Rate
1 - Downvote (-SP)
2 - Support with Reservations (+ min SP)
3 - Good (+ significant SP)
4 - Excellent (+100% SP)
User selected percentage ranges.
Create a culture that desires 4, but will accept a 3. A two should be considered unworthy or cause introspection.