For LD they could do almost anything to improve it.

Upon entering walking dead abyssal drain recast is shortened to a 2 second ogcd and healing received is increased by 50%.

Lower the recast time of LD to whatever bene is, 3 min I think, since gnb and war got a buff to their invulnerability (10sec) that surpasses DRKs effective 9 sec duration.

Doing something, almost anything, to fix LD would go a long way to at least show the community devs and Yoshi are listening.