>> The question is whether numpy has such support; if not, is it planned.

> No, and no.

Thank you for answering, and I am sorry to hear that.

I will be dropping my membership on the scipy-numpy email list shortly.
Many systems handle rectangular arrays quite well already, and are more
fully developed.

It is a common fallacy rectangles are the only shapes one ever needs.
Physical geometry is only rarely rectangular, and solution of actual
physical problems, and even number-theoretical problem, is a far larger
problem domain.