It’ll take a full season of Var for it to be all ironed out theyll be mistakes but mainly the big decisions will be corrected.
The problem is they're trying to use it for a level of detail that it can't cope with. So they'll need to come up with a principle for the operation for offsides. The one earlier that if too close to call the benefit goes with the attacker is reasonable enough, and everyone would know where they stood with it. Or to stay with the linesman's decision, that would also work. But trying to do it on the basis of a big toe being offside assuming the freeze frame is correct when it showed the ball being passed is a recipe for argument.