Darth Vader Kit Rework idea + TW Omicron.
Tarkin's kit has been reworked, but I don't think his leadership is still up to par to make a usable dark side clone team, and for many people, lord Vader is quite the distance away from being able to be farmed. What could help is reworking Vader's kit to have good synergy with clones, basically, turning Vader into the Dark Side Shaak ti for dark side clones.
His leadership zeta would be rewritten into:
Dark Side Clone Trooper Allies get 20% speed. Dark Side Clone Troopers will gain 5% Health and protection when they use a basic or attack out of turn. If the attack is evaded, Dark Side Clone allies attack again which can't be evaded.
Whenever a Dark Side Clone Trooper attacks out of turn, remove 20% turnmeter from the targeted enemy when they have Damage over time.
If all Allies are Dark Side Clone Trooper, Vader is called to assist whenever a clone trooper uses a basic ability. If Merciless buff is active, Call Appo and Knightfall trooper to assist. As long as Vader is Alive, all Jedi and Rebel enemies gain Damage over Time for 2 turns which will be imediately reapply.
Now another thing i'd also like to do is a TW omicron idea, which may be overkill.
At the start of the encounter when all allies are Dark Side Clone Troopers and the enemy team has no galactic legends, Dark Side Clone Trooper Allies get 40% speed. Dark Side Clone Troopers will gain 15% Health and protection when they attack. If the attack is evaded, Dark Side Clone allies attack again which can't be evaded.
Whenever a Dark Side Clone Trooper attacks out of turn, remove 20% turnmeter from the targeted enemy when they have Damage over time. This effect is doubled for Rebel and Jedi enemy targets. If targeted Enemy already has Damage over time, add another stack of damage over time when Vader lands an ability block.
If all Allies are Dark Side Clone Trooper, Vader is called to assist whenever a clone trooper uses a basic ability. If Merciless buff is active, Call all Dark Side Clones to assist when Vader attacks. As long as Vader is Alive, all Jedi and Rebel enemies gain Damage over Time for 2 turns which will be imediately reapply when it expires.