While bartenders in other cities have complicated the Sazerac by using a combination of spirits [us included - Difford's Sazerac recipe], in New Orleans...
Replacing both the bitters and the sugar syrup with 10 ml Campari will yield a surprisingly tasty version of the Sazerac. And the same goes for the Old Fashioned.
I know, it sounds radical, but it's actually fine.
No, too sharp. But, with the substitution in favour of the Campari, maybe call it the 'Sazeracci', in honour of the Giancano mob's nefarious deeds in 'The Big Easy'.
I know, it sounds radical, but it's actually fine.