You just need to be familiar with the platform and how the exchange works we do have our own assessment from this exchange me I can't work with ED as I'm taking advantage of some etc tokens which been not yet offer from big exchange, it's an opportunity if you are seeking for good investment coin.
As what others say, there are gems in etherdelta. At first it is hard to figure out how it works but as you trade more in there, you will be getting familiar with the process and it is important to pay more attention when you input the amount because there are many traders that miss one zero so instead of having gains, they end up with a loss. All of us have different perceptions when it comes to exchanges. Some may like it, some may not. Personally, I like trading in etherdelta because some of the coins are really cheap and many of those coins are listed here first before hitting the big exchanges.