I wonder if its not better to use ZeroCash protocole ; the white paper is out tomorrow : what if Evans is the first to implement it into a coin ? That would give DRK so much more momentum than trying to chasing cryptonote coins.
Zerocash is not without its problems, which the creators have acknowledged. There might be some who would have an issue with trusting new cryptography. See zerocash presentation slide:
https://bitcointalk.org/index.php?topic=579976.msg6335710#msg6335710