Glad you recognized that the current 300% return is unsustainable although I wish you luck in obtaining it. Whales aren't buying these coins because they would move the market too much. It's best to keep your investment small and only what you can afford to lose. This airdrop was free money and when the excitement dies down people may abandon ship, I still don't know what gives LEO value.
I thought Steemleo already implemented some of the changes that were proposed in HF21.
If @Steem.Leo can successfully become like a StockTwits or Seeking Alpha, I think it would work and that's what would give it value. Think of Steem Tribes like subreddits.
It's easier and more targeted to become a top influencer of a topic-specific forum than a generic "Steemit" forum.