Well, the idea is not to counter the sensor distortion, but to make ships harder to hit after jump, thus granting a defensive bonus, while accepting the negatives, being no attack at all.
Ships wouldn't be able to see or shoot just as now, but for an investment similar to regular ECM, in addition to it, would be harder to hit after Jumping.
Btw, that would not stop the enemy from using missiles against you, as the ranges are so short, it only works versus green crews with beamweapons.
I have no objections against a counter to that, I mean, why not, if you can build ships specifically for Jump Assaults, you can also build them specifically against Jump assaults.