Yeah, the masses have spoken, and their silence is deafening.  I was going to downplay the "health" of the package based on the number of downloads, but then I looked at the "futures" page.  b^)  Seriously, getting this in would require a core developer wanting it in, and at this point it seems none do.

On the subject of float operations, while there may be some question about the integerness or floatness of timedelta, monthdelta is definitely an integer.  As monthdelta already supports multiplication by integers and floor division by integers or monthdeltas, I don't see anything missing.  To use monthdeltas with floats is to miss the point entirely.