With the proliferation of speaker channels perhaps Axiom could lead the way in just calling them by their suggested offset. The center would be the 0 degree speaker, mains 30 degree, wide 45s surrounds, 90s etc . . . .

3M80 2M22 6QS8 2M2 1EP500 Sony BDP-S590 Panny-7000 Onkyo-3007 Carada-134 Xbox Buttkicker AS-EQ1