Make sure to rotate your pronouns periodically, so that if your gender becomes compromised, attackers can only access it for a short period of time.
Btw if you use a Slavic language, you have 5 non-prepositional and 5 prepositional forms of your personal pronoun for 6 cases (5 because not all cases allow both forms), so can randomly change each one between 3-4 options (masculine, feminine, neuter and plural, but some forms coincide). [Actually that's why I think that pronouns in their current form are very English-centric stuff]