Such a scenario is not going to be solved by inventing new, personal pronouns. Here's an alternative: Why not pick a colour to represent your gender. Then, find the 6 character, hexadecimal representation of that colour & wear it on a badge. The hexadecimal system allows for over 16 million gender colours, which is hugely diverse.
If I wore a badge, stating that my hexadecimal gender was EFF0FF, I doubt that anyone would object to using the term "EFF0FF", when addressing me.
By improving health, empowering women, population growth comes down. - Bill Gates (b.1955).