As a former Nxt enthusiast, I hope WAVES will succeed. The white paper is promising great things but as known from Nxt, the project could be a new step ahead when they do not try to implement the jack of all trades device as Nxt did. I think the chance is good to succeed by implementing the fiat/crypto interfaces. CoinoUSD has prooven that it works.
The trick is to concentrate on one thing and do it succesfully.
I have high hopes for WAVES.