If it makes it clearer and stops the irrelevant discussion about commercial legalities, let's pretend someone built a new-design Evo bike, using top spec-2013 technology - and air/drums/PDS.
With reference to the 2013 MoMS, tell me how it isn't Evo legal?
It's not out of the question that someone will do this: you can buy 2013 built copies of 1981 Maicos, and they're not a bargain basement option.
Currently, Evo is NOT a historic class. It's open to bikes - and components- designed and/or made from 1885 to 2013.
To repeat myself for the 7,329th time: We agree on the basic intent. There's some disagreement on the details. The rules as written do not support even the broad intent. I believe that should be fixed.