I know we don't want to get into a situation where all plays become reviewable, but if you are going to review boarding penalties that are assessed 5 minute penalties, you might as well open it up to all boarding plays that are deemed dangerous.
I mean, once the 5 minutes were assessed to KK, it was a forgone conclusion that he would be kicked out since it drew blood, review or no review.
To me, the bigger issue is when a ref misses or misinterprets a dangerous boarding play altogether, which I don't think would be a reviewable play under the current rules.
Establish a standard, and leverage video review to help uphold it.