This could be done by giving points to those who give suggestions the devs plan on implementing. For example, if someone suggested to add a plant into sr2, and the devs or whoever think it’s a good idea, than that person gets “X” amount of points plus whatever upvotes they get from their idea.
For bugs, if a player finds an actual bug and whoever was able to recreate it, than they would get “X” amount of points for actually finding a bug, and will help that bug get solved. This would encourage players to post bugs they found and the steps to do that bug.