It would make the datetime class look more like other class names, but I'd strongly recommend against doing this. The Python community values consistency in the way that code is written (TOOWTDI) and this would be a sharp departure from that.
Fair, but maybe some class renames wouldn't be a bad idea for the v2 to v3 switch over. I don't know what the priorities are or what the bar is for changes that make the cut, so don't quote me on this :-)
