If I’m not mistaken, the VSR “multiblend” is an acceptable solution. Rhino should look in this direction, not only with this tool, but also for the blend surface, etc.
(Currently, Rhino is the only modeler that does not have tools to generate complex surfaces (multisweep, multiblend, Y branch surface, SubD …). Even parametric modelers do everything and even better!).
In my opinion it has remained a little behind, stopped at the first versions! This is a fact, undeniable!