Invisibility for the Town Hall.

No, I don't think it's worth nerfing them. If you reduce the duration of invisibility to two turns, what's the point? They just run to the end of the map, and that's it. And if you increase their initiative, Stalkers don't always go first (sometimes they go after some Elven Archers). And if you reduce their intuition, they'll be taken out by those same archers, and the invisibility will also lose its meaning. But as it is now, I think it's just right. But the developers probably know better, let's see what happens in the patch (if it ever comes out).