Warding and new items

Hey guys I really love to play some Teemo in normals just to blow some steam off while in the offseason. And I feel as if you completely destroyed teemos kit. Now with the new vision wards, all they have to do is place a ward and for an infinite amount of time they can see my mushrooms and destroy them without triggering them. I understand I can defend it, and I don't mind that change, but with the added change of duskblade of draktharr, they now can walk around freely and destroy my mushrooms, and to make it worse, its not an active. they just walk near it and it goes off without triggering. And they can find me at that way as well. Now I could understand if it was another active, that they had to push on there own accord. but just accidently walking into me, finding me, not being able to set off a my mushrooms, just destroys my kit all together. Thank your for taking the time to read this and follow up.