Dave,
A group might share molds or other tooling for a conventional blade. Not so realistic for an experimental active twist blade.
Rotor blades are probably the most torsionally stiff structures ever designed to prevent flutter. I dont want any flexable blades unless you can prove it to be simple, cheap and safer than stiff blades. High performance is not needed. Any performance would sell if the cost was reasonable. Just my opinion.
Slower rotor is a good idea.