Hmm, so these things should work effectively even with crappy psi strength/skill?
Not necessarily. Depending of the impact on the game, I'd say. I don't know, how the balance will change in the end, when you have an option to see through the eyes of an enemy unit or if you can "feel" them around you. But if it turns out to be a really powerfull option, it'd be right to increase TU-cost and/or lower success rate. One thing I believe will be uses even in late game, is the feel-option. It's one thing to mc units you can see. But it's an additional advantage to feel them as well. Could go hand in hand. However, it'd be limited in range, like the motion scanner. So that way, you wouldn't create map control (which really really would be imba) that easily.
Then it's even more OP than I originally thought.
It's a question of TU-cost and probability of success. The feel-option could cost 80% TUs, with rather big probability. But you'd still need LOS to mc the unit. You'd only be aware of it's postion, not the direction, where it's facing towars.
On the other hand, mind-scouting isn't that powerfull, so let it be 25 TUs or 40% TUs, but with a rather higher risk of failure somewhere inbetween control and panic. One can play around with that until it fits well.
But I guess one man's meat is another man's poison... maybe a lot of people would like it.
Exactly. A mod of some kind would be sufficient. Those who like it, can use it. The others don't need to.