unfortunately you wanted thenm to say CHRISTIAN sister or Hindu Sister or Sikh sister, I do not see a.need for that.
You are a sister in humanity and that's why they say Assalam O Alaikum brothers and sisters.
That's my take.
Chief, The rest of what u said is irrelevant to my opinion.
NO i did not want them to say any other form of religion sisters or brothers...just welcome to everyone NOT SALAAM to brothers and sisters because I am NOT MUSLIM and as such Salaam is not addressed to me!
You will not say Salaam.... when we meet would you?