Keeping the 1:1:1 ratio the same, substitute the floral gin for the stronger mezcal to give your Negroni a smoky, South-of-the-Border kick.
Same ratio as above, but substitute the Vermouth for an aged tawny Port to lend it an oakier, heavier, more fall-friendly essence. Or perhaps I should say autumn-friendly — we don’t want you stumbling.
Equal portions, yet again. But substitute the Campari for French apéritif Suze and the Sweet Vermouth for Lillet Blanc to give your Negroni a more citric, botanical profile, as well as a distinctive, lighter hue.