That is pretty much how all AoE works. If you hit less then 2-3 targets, it is not worth it. And even then, that damage is very unlikely to actually kill any of those targets.Projekt agony field being a full action means it deals less damage than the normal attack(same range), unless it hits 3 or more targets
Debuffs - including Stagger - is how they work.
If they are poorly modded, just change the mods. The cost of existing mods is substracted from the new setup.just without turning enemies into Indentured after combat, but are non-well-built, non-energy-efficient assembled Indentured what we need late game?
But more likely then not, you get something worth keeping and even deploying across all your Syndicate Indentured. I once got the Phase Walk Mod by accidentally taking the right unit with the Collars. So now all my indentured can walk through obstacles and are 20% harder to hit.
I also have no idea what you mean with "non-energy-efficient assembled"? You mean without the Assembly line Energy Sector Building? Upkeep can not be reduced by more then 50%. And Indentured Contracts already does 50%. And if you field any relevant number of indentured units, you want that Doctrine. So additional reductions will mean nothing.
And at worst, you could always just disband the unit.