Clear and concise definitions of what acceptable so everybody understands is what's required and is all that has ever been required , but then apparently the mind forking option is much more fun
And that is exactly where the problem lays....
Even though there was ample input from interested parties the commission apparently chose to ignore any, or all of those suggestions and left us with a whole new world of ambiguity with an arguably un-workable set of way too simple rules.
It seems the rules are now open to all sorts of interpretation and at the end of the day, it's up to the eligibilty scrutineer to insert their interpretation of what's acceptable and what isn't.
Allowing a set of later model, conventional drum brake forks didn't cause all this kuffafle. The wording of the rules caused it.
Apparently, 43mm forks have always been regarded as kosher in the Evo class. And in my view, so they should, on the basis that it was legal to fit Kayaba 43mm conventional forks with TLS drum brakes to any bike but some deemed and argued that it was not kosher to use 43mm Showa forks with essentially the exact same set up based simply on date of manufacture. Yet, and here's the elephant in the room, if you could find and afford a set of 44mm Fox Factory forks, you could run them on any bike you like.
As for the 45 degree brake lug or the Horizontal brake lug on the Yamaha Kayaba fork, who cares. They are both essentially the same fork at the end of the day.