Implanter Action Bar+Time

[Lord_earthfire]

at the least, it'd prevent someone from getting a random jump on you without warning.

That's the problem. I can talk in lenghts about how many stories simply would not have happened if the mindhack would be preventable.

It does not take you out of the game, thus it does not need counterplay. It does not stop someone else from playing, quite the contrary. It's very often the start of a great time.