I reffed for 40 years & you're not even disagreeing on something because it's not opinion. You're interpreting something that's just not there.
When entering the offensive zone the neutral zone extends all the way to the leading edge of the blueline meaning the edge closest to the goalie. To stay onside your skate must be in contact with any part of the neutral zone which includes the entirity of the blueline since the neutral zone extends all the way to the leading edge of the blueline as explained earlier. It has always been called this way at every level of hockey ever.
When already in the offensive zone it extends all the way to the outer edge(center ice side) of the blueline so the puck must cross the entirity of the line to be considered "cleared" of the offensive zone.
This all being said, I agree with your premise to make the bluelines wider, 3 feet IMO, because that would extend the size of the offensive zone thus increasing offense.