Is it ok to copy a W5 head and make it better or are we just mad at Speedmaster

Every aftermarket part for any factory built engine has elements of the factory original. At the most basic level, it's by pure necessity i.e. head bolt locations, intake and exhaust port location/shape (in most cases), etc.

I'm curious who the parent company that makes the speedmaster heads were mad at. They had to copy some elements of the originals, and likely other aftermarket examples to make there own.

I don't think this necessarily requires someone to be mad. It does take someone who want's "better"

What if someone could take a W5 and build in the improvements (some or many) that the super talented head porters do after the fact. That would be pretty awesome.

But to be fair, it could be because we're mad, but maybe we're mad because we know it can be done better.