I still find it hard to believe how so many devs "centralized" their coins by only listing it on this exchange (or Bittrex, etc.).  And a lot of coins are essentially one person operations.  The exchanges will only talk to the dev, and if that dev isn't motivated, the whole operation comes to a standstill.  These coins don't have to be bad worthless coins, they can have vision, but unless that dev can delegate, things seem to get stuck quickly.