Fantasy Flight missed the mark with this card. Their intention to make a multi-player scaling card was good, their execution was not. To properly scale multiplayer cards the format needs to be: (Flat value below curve plus 1 value per player). The end result of this format should be a clearly bad card at solo, close to even with other staples at 2, and then above average value at 3-4.
To fix this card it needs to read: 2-Cost: Alliance, Remove 2 threat, plus 1 additional threat per-player from a side scheme.
At Solo this would under-perform compared to what For Justice, Crisis Averted, and Multitasking can accomplish.
At 2 Players this would come up even with For Justice with the added restriction of side-scheme only targeting but the added utility of min/maxing player hands via alliance.
At 3-4 Players this would be a clear auto-include over/alongside For-Justice.