[T]he practical basis of Sadie Hawkins Day is one of simple gender role-reversal.
Women and girls take the bold initiative by inviting the man or boy of
their choice out on a date–almost unheard of before 1937–typically to a
dance attended by other bachelors and their assertive dates.

Nowadays, gender roles are pretty flexible.  Ideological roles, in contrast, seem more rigid than ever.  Hence, the main role reversal I’d like to see: For just one day, criticize people on “your” ideological side instead of “their” ideological side.  All day.  Full sincerity.  No irony.  No mischief.  No Strauss.  Just candid independent fault-finding, written as politely as you usually address your ideological opponents.

Maybe like this.