You mention a lot of good things that the JW's do, now that all sounds well and good.
However, what if effectively they are a wolf in sheep's clothing or the angel of light?
So on that bases, I will ask a hypothetical and ask you answer it honestly and no ducking for cover.
What if the JW's have the identity of Christ wrong in that, he is NOT the angel Micheal?
Tell us with Biblical backing what you think the consequences would be for those people (JW's) if it turns out they are wrong.