On one hand - constantly tinkering with the rules is annoying.

On the other hand - this makes a lot more sense than the current system.
There will always be edge cases, but I prefer this idea of "The striker is onside because there's no 'daylight' between him and the last defender" over the current "The striker is offside because his big toe on one foot was 2cm ahead of the last defender"


>At grassroots level this is a nightmare.
It feels like this would be a much easier call for the linesman to make at grassroots level.