I used it couple of weeks ago but fees are too high.
Idex is much better, try that one.
I also regularly trade and buy coins at very cheap prices on ED. However, to improve the support of the investment community, I think ED should improve their trading features to become smoother and faster.Idex is much better, try that one.
Which delta? ETD or Forkdelta? If you mean Fork I think that you were wrong cause only ETD is going to die and there are no traders and investors wanna use ETD to trade anymore cause it's not a safe place to trade so nobody wanna put their cryptocurrency in risk by using this exchange anymore although they can sell every token as they want on this exchange 
Why etherdelta isn't safe? I see lots of traders and trade orders there