They would provide reliable Psychic Energy protection for Minnick and the numerous elites of the Fatches Family at the center of power.
The assassins would be caught the moment they invaded;
As for space teleportation, it was an even more critical target for prevention. Not only was there a Psychic Energy team working on this, but two years ago, the Fatches also bought a specialized anti-teleportation device, which made their countermeasures against Psychic Energy teleportation even stronger.
If the teleportation was initiated from outer space, no matter how many, how powerful the Psychic Energy users participating in the teleportation were, they would be severely disrupted. At best, they would be deflected and tossed into space; at worst, they would become "lost," disappearing into Subspace, which was a dire fate indeed.