It's suprising that manufacturers and airlines don't pay attention to small things like masks and communications . If they are capable in putting their engg degrees to put in cup holders in every nook definately they can design oxygen mask more user friendly .
Most flight crews can't manage comm in a sim situation with masks, dread to find myself in a situation where it's critical to wear your mask , get the right switch for O2 , get the smoke diffuser going and bark instructions to RHS....