Jonadab,
welcome to the board. I noticed one point in your list of beliefs that I would beg to differ on:
Jesus return would be invisible.
They never taught that Jesus return was a future, invisible event. Russell first taught that Jesus would return in 1874. When this did not happen, he began claiming that Jesus had returned, but that his presence was invisible. Therefore, the Society has for most of its existence painted Jesus' return as an event that has already happened invisibly. For many years, the date given was 1874, then it was moved to 1914.
You also referred to the flood of Noah's day as proof that God would wipe out a world of wicked people. The only problem with this argument is that there is no evidence of a global flood, and much evidence that shows that it could not happen. It took me only an hour or two on the web to find overwhelming proof that the flood cannot be taken seriously.