Ok, I'm getting used to the new Jungle...but here is the problem.
The crab gives off way too much information, gamewise and psychologically.
If I'm ahead and was not contested, it mean the jungler can only gank from the other side of the jungle becuase of the vision shrine. In this scenario, if i warded their opposite jungle by any chance I would have denied the enemy jungler a gank for a full 1:30 mins. Even a brainless pinkward in front of their jungle entrance would DOOM my foe.
Also, if enemy jungler did not challenge, why would I NOT invade and beat the brains out of the enemy jungler. It means they have no confidence of dueling me. Since I have this ward clearing plant so I can detect their jungler over the wall, he is a dead man.
...This causes way too much problems. This thing was never meant to be a valueable objective unless league is becoming Dota2.