I like the updated offside rule, although I think the maximum amount the skate blade can be above the ice is the height of the yellow border at the bottom of the boards, I'm guessing 8".
IMO this image below should not be offside.
If someone is crushed up against the boards and their trailing skate is above the yellow border, offside.
I think they can write is in such a way to allow for a very brief review if necessary.