They wouldn't be there to judge incidents, they'd be there the implement the rules and instruct the referees on how they should be implementing them. Doesn't have to be former players (that was just a spur of the moment suggestion), just a different group that aren't referees and therefore won't 'protect their mates'
I just think it doesn't matter who you get really, people are just pants at being consistent and impartial.
I'm not sure I agree with it either, except the first celebration is a 'normal' one because you don't yet know it's going to VAR.
The initial celebration is short lived for me as my mind very quickly thinks about VAR. Obviously, there are some goals where VAR won't make a difference though
I know, but you still have a 'normal' celebration for the goal. Nobody is expecting the players to stop while every single goal is checked.