I guess it's true that friendly soldiers might actually fuck up your traps, but it would be a cool idea. Plus, I would doubt your teammates would try to troll you in a match. :P
How situational do you think this could be? I don't think that much, sticky traps are iffy now because you can't hide them well enough before someone figures where they are. Allowing for mobile sticky traps, to some degree, would be a GIANT kick in the nuts for teams without that awareness. I don't know, I really think this could change some strats, promote some teamwork, and prevent cancer.