The Subjugator, like all Syndicate units, either serves to bait the enemy or to punish them for taking the bait. In a straight-up fight it will be very meh (as is the W tank, really).Why anyone doesn't mention another 'glorious' unit - SUBJUGATOR?
It's worse in every aspect comparing with previous unit - Wraith Tank. Weaker attack, weaker main stats, cumbersome, more expensive.
Deploy Cerebral Control Collars - isn't a deal really, coz works only vs. infantry (~t1-t2 units), have too long cooldown and needs full action.
Activate Reanimation Collars - reanimate 1 indentured unit with full HP. Once per battle. Seriously?
Project Agony Field - inferior version of normal 'artillery' ability.
Unit needs rework or balancing. Add some more buffs or interesting abilities around indentured feature. Like revive all indentured in 1 range radius. Buffs for accuracy/critical/dmg/whatever for all indentured in stack/on field.
The abilities you're deriding as useless are actually very strong, but require specific conditions to work/be worth it.
I think you might enjoy Vanguard more.