That's so nineties it's quaint, even cute. Using the default masculine was totally reasonable for policewomen and actresses and manhole covers... but only made sense when the goal of rearranging language was about removing inequality, rather than establishing new hierarchies based on "identity" - which is a thing you can claim you chose or claim was forced upon you, as it suits you, depending on the rhetorical context. No, definitely a single or dual gender noun won't work. Maybe a system of emojis or animated gifs instead of the "lord" part of the word. We might need a new version of Unicode for this.