There's so much audio and video stuff that works so much better with ptp. Even if it's vastly less good, its still gotta be some way to keep systems running on the same time, and that's a huge win. I'd love to see wifi PTP happen.
There's some really incredible research work a team did a while back, hacking their own PTP implementation stop a specific driver (adding timestamps to ath9k). https://github.com/zlab-pub/wifi-ptp