I disagree. The MC powers are one of the few things the enemies can do to throw the wrench into the gears of your death machine. I don't find it OP at all (also being MCed from across the map is impossible, not with 50 psi strength - both equations and practice deny it) - there are many, less or more underhanded, tactics to deal with it, like:
- anti-psi armors (from the starting ones, bikini gives a noticeable psi def. buff, same with Novice through +15 Psi Str);
- proper formation (dispersion) & inventory management (do not take the deadliest weapons with you, esp. explosives);
- designated 'psi-rod' soldier(s)
If it's still to0 hard, wait for better soldiers and better tech to combat the threat.
If you can't stand the heat, you can always mod it for LoS (but you'll lose the bragging rights 
).
- type: ALIEN_PSI_WEAPON
LOSRequired: true
It's not about hard/challenge/heat, it's about RNG, pure and simple. 'Across the map' is a bit of an exaggeration, but not by that much. What actual defense do you have for example, against an Provost behind multiple walls and legions of enemies randomly panicking and MCing even those units with some of the highest VooDoo strength values possible? Even after pumping up your defenses, you still have a decent chance of getting fucked over. Also I'm using lightning rod troopers; problem is
A: If you leave them alone, you risk them picking up weapons and killing you.
B: If you stick around to make sure they don't fuck you over you commit 2-3 soldiers for the _chance_ that your soldier gets subverted.
C: Most annoyingly, they don't always target the lightning rod soldiers and when they do focus them, the lightning rods get subverted and then they move onto the next target. RNG.
Further, if you actually want to take on a battleship/hideout (where you encounter a Provost and multiple Espers), you're kind of obliged to use weapons that are capable of killing your soldiers.
Lastly, a formation is no reliable defense against this: your soldier panics, runs into an enemy gunline and dies (or is paralyzed and an enemy comes at him bro while he's defenseless). Your soldier is controlled, runs into an enemy gunline and dies, or because your soldiers can easily have upwards of 80 TUs and 100+ energy, is able to move far enough that he's able to get a shot in anyways, even with considerable distance between units.
Bottomline, there is no reliable counter to this outside of save scumming.
Can I win despite this bullshit? Yes. In otherwords, I have to accept and budget for a certain # of losses that I am largely powerless to stop.
Is this mechanic fun? Does it add more to the experience and the gameplay than it takes away? No. Fake difficulty at its worst.
At best, it's an annoying mechanic that lacks a proper, non-RNG method of defeating which guarantees losses over time, and denies player agency over its prevention.
That said I accept your challenge and
I will crush this mod at the hardest possible setting despite the RNG nonsense.
