I feel like there should be curation-methods to reward contributions in one way or another and at the same time giving the curators/moderators part of the rewards. If I could understand it more how the edits are formed (do they create a new hive post, do they just use a certain account to edit them out, can new edits be granted a new post/comment), it could make it worthwhile to people to contribute more.

I guess the hard part would be knowing how much of the contributions are vetted and how much effort was put behind it, I.e. someone didn't just copy a contribution already on wiki and pasted it on your app for some post rewards by an unknowing curator.