I think we need a decentralized exchange , for trade directly buyer <> seller without any intermediary (like bitsquare).
I think we need a
decentralized transparent exchange
There is already a transparent exchange.. Atomic-Trade.com
Just look at the real time liquidity page
https://www.atomic-trade.com/liquidity . Just needs volume but people obviously don't like to use transparent exchanges without fake volume.
No fiat thought, It would be good to see flows between BTC and fiat day by day, month by month etc.