What would they change the name to ? As many of the thousands of denominations have "Christian" or "Christ" in their name, some have "Jesus."
The LDS/Mormon Church has both already ! as do minor denominations.
They have tried to distance themselves from the name "Jehovah" in the minds of the public, with the JW org Logo, but that didn't work.
I think a re-branding including a change of name, could work for appealing more to the public, but it would be so blindingly obvious what had gone on to all existing J.W's I think they will hesitate to do it.
Maybe I will be proved wrong, they may simply be waiting to see how these new things are taken up blindly by the JW Gullible Drones, and then doing more dramatic stuff.
The G.B has such disdain for the ordinary J.W they may say to themselves, " We can now get away with anything".