Tenzin and Lin may both be suspicious. I mean they know everything (collectively) about the city and even during their fights with the Equalists, Asami showed no bending skills. It's sneaky...XD (oh my tenzin x asami feels shhhh) I know for a fact Asami's secondary bending will cause a huge stir but when she's offered the third, Asami will understand how against nature it is and how it's impossible for her to do it without harming herself. It might be nice to include some kind of side effects for the next two elements she does get. I mean Korra has spirituality and was born to be the Avatar but a normal person like Asami may be physically and mentally unable to handle it.