I think they should remove offside from the list of things VAR can rule on, and leave it to the linno. There are plenty of other things which VAR can't get involved in. There was an incident in the Chelsea v City game when VAR had a quick look at whether Grealish had handled a free kick, and the...
I'd not given this much consideration. So if the 2 Nd to last defender is the keeper, and he's in his area so can legitimately use his arms/hands, those parts of his body are still not used when VAR are determining and offside decision