Actually, I did have this in mind when setting up the recent Threads contest. I've also been curating Threads with the tags that have genuine content at a much higher percentage than irrelevant ones (i.e. from 1% for irrelevant content all the way up to 25% for high quality, relevant content). I think it's a viable model, and I'm going to make sure the future contest emphasizes this distinction even further.
I think this type of model will allow people to feel free to post anything (I'm even ok if someone decides to trash talk the community lol), but those who contribute with the spirit in mind will get much higher curation. It'll guide the community, rather than limit it, if that makes sense.