During the Beta the Voidwalker class had Blink as a jump option like we do now. But during the Beta holding "crouch" while falling activated Glide also. This made Blink a viable option for PvE, since many PvE events require a large jump that you can't survive given the current Blink. Since it didn't add any height it wouldn't give any real advantage to PvP. Please add back the Glide feature on Blink.