... bad ... cryptopia
Do you know what you are talking about? Another "good" exchange would mean a rising price? You have found the culprit, happy trading!
yes stuff are going bad with cryptopia
they are doing unprofessional stuff,posting personal information of user on the forum, dislisting coins because someone they don't like post in the coin thread

they also dis-list DMD,ether and more, ho wanna trade there ? definitely no future there
Ok , normally I would stay out of this.
However, there is a little too much slander for my taste.
Cryptopia is a Great Exchange, and they are passionate about their work.
I have kept up with the goings on between them and the coins you mentioned,
Cryptopia is at No Fault for defending their rep.
(And if that other coin had done a chain swap like I suggested, then that final friction between them would not have happened, at least not yet anyway)Dmd caused their own problem with their updated wallet code,
Cryptonit was fairly diplomatic during the process, but their paid dev
(old Phoenix coin dev never showed up to help correct the issue.)So if the paid Dmd Dev fixes the code , it may get back on cryptopia on the next version
(at least according to Cryptonit's posts.)If you want other exchanges , then Bleutrade is 2 BTC or Bittrex is 3 BTC .
Considerate the fact that EDRCoin 24 hour volume on Cryptopia is
EDRC/BTC $ 86,293 It is hardly the exchange, it is the traders that make the Volume! 
FYI:
Exchange Blaming because you don't like the Coin's Price is Pointless and Bad Form.