Lon

Using "one" as a generic pronoun can lead to confusion, since "one" can mean
many things.  "Lon" can be used as a direct substitute.  Exempli gratis,

Throwing bricks is not what lon who lives in glass houses should do.
Among the many reasons not to pick fights, one is that lon can never be sure
of lon's opponent's strength.

"Lon" can be pronounced to rhyme with "son" or "don."



Zon

A simple substitute for the slang gender-ambiguous pronoun "they" is "zon."
The declension of this singular third-person pronoun, as compared to the
pronouns in existing usage, is as follows:

Nominative	Accusative*	Genitive**	Person	Number	Gender
I		me		my, mine	1st	sing.	ambig.

you		you		your(s)		2nd	ambig.	ambig.

he		him		his		3rd	sing.	male
she		her		her(s)		3rd	sing.	female
zon		zor		zor(s)		3rd	sing.	ambig.
it		it		its		3rd	sing.	neuter

we		us		our(s)		1st	pl.	ambig.

they		them		their(s)	3rd	pl.	ambig.

* = In modern English, this typically includes dative and instrumental cases.
** = In modern English, the genitive takes two forms, depending on whether
it is used as an adjective or as a copula ("noun form").

The appropriate disjunctive pronoun, since it is commonly disputed in
English, is not specified.  It is often asserted that in "proper English,"
the copula and subject of a linking verb must agree in case in the case of
pronouns ("This is she" as a reply to "May I speak to the Orange Squid?");
likewise, "zor" may be appropriate.  In speech, almost invariably the
accusative case is used ("zon").

The corresponding plural to zon is simply they.

The reflexive form (used as an object when the subject an object of a verb
match) is simply zonself, like all other modern English pronouns.