Pelizzoli Leggenda, "No more compromises"

All this talk of building a frame to suit a fork seems a bit odd to me. Head angle, fork length, wheel size and rake will all affect the trail too, which will have a marked effect on handling.
It seems odd to get a full custom "no compromises" frame, then start discussing various compromises so the fork looks nice. My 2p...

I don't know, it seems like a sensible place to start to me. A metal frame is a collection of tubes that can effectively be joined any which way. A carbon fork isn't.

If the requirements for the fork weren't so specific - i.e. a carbon disc fork - then you'd just work on the basis of whatever is the most common road fork, and pick from one of the many forks available that best suits.

You're using the builder's knowledge and expertise so that you can have exactly what you in terms of features and ride characteristics.