Alright lets make this quick. Why do Fletchers sticky bombs stick to everything except teammates? I see more tactical potential than disadvantages in this. (sending one teammate with stickies all over them in a hot spot etc)
Now please bash me with your hateful comments
Imagine Fletcher trolls and Kamikaze Proxy… I mean, Christmas tree Proxy with Sticky Baubles.
I can just imagine the suicide tactics… just think about putting the bombs on yourself. Running into a room a blowing yourself up. How great would that be. Im not talking about the game here.
Actually they do stick to teammated when friendly fire is on. 
However I wouldn’t use tactics like that. Aura, Kira, Phoenix and Sparks are more useful alive, and Proxy can already suicide bomb herself with much more efficiency (and does it constantly).