Especially when you remember that you san say that generally, without breaking the enemy out of their hiding - "over behind the bushes to the north". They can still get their advantage when they attack from hiding, can't be directly targeted by spells, still have the advantage/disadvantage from hiding, and all that.
The point at hand is that a feat is a pretty significant thing, and having it be, "you get to take an action, but usually it cannot be a meaningful action," is devaluing the feat a great deal.