Race protest.
My guess: three things will happen.
Mercedes' protest will not achieve what they want. The race outcome will stand. Mercedes will appeal that decision; lawyers will get richer. Nothing will change.
It will be found that the race director made a Horlicks of the safety car restart. Michael Masi will be asked to consider whether he prefers gardening to motor racing. I think he has lost the confidence of too many big players.
Next year there will be an absolute ban on team principals contacting the race director during the race. There have been way too many negotiations in real time.