Should the subject of your seminar be 'future rotorcraft', you may wish to
focus on the coming ability of blades to vary their angle of attack at
desecrate locations, as defined by the rotor's polar coordinates. Radial
positions being set by active blade twist etc. and azimuthual positions
being set by higher harmonic control etc.

IMHO, when these two abilities become operationally viable, the two most
promising rotor configurations will be the Intermeshing for light agile
craft and the Interleaving for fast transport craft.