Orbitcoin is listed on 3 exchanges. Not enough?
With Cryptopia completely out of business and TradeSatoshi(currently only one active market for ORB) probable going next exchange scam (a LOT of negative customer reviews last months including mass account blocking and big withdrawals delays, also actual company behind exchange was already liquidated last year - see https://beta.companieshouse.gov.uk/company/09878766 ) we definitely need another active exchange.
May be https://www.altilly.com/ will do? You get managed PXC added here, it will be easier compared to trying completely new exchange.
Or other good candidates?