After playing serenity pretty hard for the last couple weeks in all game modes, the bottom line change that needs to happen with this spec is the Dot lifesteal needs to be increased. The healing you get from Dots is absolutely negligible. I don't know how someone decided that this version of a Dot+sustain spec was satisfactory. The heals are so small they might as well not even be in the game. The serenity strike lifesteal is fine. don't touch that. But the dot healing needs to be increased enough so that DPS shadow players might actually consider playing it over infiltration.

If BW is so against increasing serenity sustain that they will not entertain this, then there needs to be an item that extends the range of force breach and force in balance so that the spec can apply its basic dots without having to walk into melee range and getting forced out instantly. Make it so that it will have to determine when it's safe to walk in to use squelch, whirling blow, and serenity strike.

DoT spread from death field not lacerate (I never like the change to lacerate as the DoT spreader)

Death field has bigger radius and hits harder the more in its radius

DoTs do more damage up front in the first 6s to mitigate slow ramp up, falling over the duration when other abilities become usable.

Set bonuses ideas:

Mass mind control affects targets afflicted with your DoTs making them deal less damage to you for 10s after activation.

Death field and leaching strike when critically hitting makes self heals increase by 100%

Lower CD on deflection.

longer duration on force shroud.

Force shroud can be activated when stunned with soft stuns and purges said stuns, in addition to resisting force and tech attacks by 200%