Make being a witness more lucrative for witnesses that are out the top 20. I have substantial financial stake in STEEM as witness that owns a SEED and a Witness server and I am in process of putting together a full 512 GB ram RPC node for public use. Yet my daily reward is less than 4 STEEM. Better payouts would mean more witnesses willing to put up more hardware & bandwidth infrastructure providing the ability to span a longer payout window. This is something that is doable and would attract more quality content producers in turn groin STEEmit.com as a place to go to get good content.