Graviman,
"Interleaving configuration .... My real objection is the drivetrain complexity"
If the Interleaving drivetrain gets you excited, think about the Tiltrotor's drivetrain.
"I" STILL
"don't understand your disk loading concern.". Let's not worry about it .
To me, it is a shame to not utilize the retreating blades, but as you say
"... we are both disputing respective speculation."
Over and out.
Nick,
That's a good idea, but Roton beat us to it.
Dave