SUGGESTION: Its double warded .. NO !
Hello, Its my first time posting something here! 
I always of wanted to make that suggestion for riot, the double warded bushes...
I had the idea that if 2 champions put a ward on the ground at the exact same place, there would be at least** 0.5 sec** for the second champ to re take his own war,. by clicking again on 4 (the number for casting the ward)
OR
if you don't like the idea.. If 2 champs put a ward at the exact same place at the exact same time. The ward could stack on each others ! so the ward wont last 1 minute, but 2 minutes !
How its sounds, good idea or bad ? :D