Well tribes can be turned into hive, i mean its sad to get no rewards but if someone though your content doesnt deserve the rewards he has the right to downvote, feel free to write about other stuff

Giving more rewards ? Rewards comme from inflation, so giving more and more and more might not be beneficial to Hive even with more users.

If you make a "team of moderators" well congrats you just created HiveWatchers but with even more power since they can wipe the money you have on your account (they could do that to your posts too haha ^^)