Congrats to all who have gotten in off the WL both for 2016 and 2017.
FWIW, my D is a Legacy. She applied RD and was WLed.
It seemed she might be a candidate for a Z-list spot; she decided that if offered a Z-list spot she would decline since she had several other excellent college acceptances for the fall.
As it turns out it did not matter; she was 'released' from the WL in the first round in mid-May. She was a solid candidate with excellent stats and ECs to match or exceed many of the admits I have read here on CC ; those who think Legacy is a 'done deal' should think again.