I started work on an elevated fingerboard classical, but it hasn't gotten very far. I keep working on other instruments instead of that one.
I'm doing the Greg Byers method of building on a solera that has a ramp to bend the soundboard at the lower transverse brace. This method allows the string escape from the bridge to be parallel to the top as in a normal guitar.
The other method is the Humphrey Millennium method where the neck is canted at an angle to a flat top. My instructor has both and prefers the Byers method as playing the bass notes with ima fingers is really weird when the strings are so far above the top at the rosette as on the Humphrey.