Nice! More serious in flavour than its gimmicky colour suggests.

Added a little Suze, gentian liqueur, which added not only a pleasant bitter dimension, but also changed the colour towards the turquoise/aqua spectrum, as Suze is yellow.

Italicus plays very nicely with the dry vermouth (Noilly Prat in my case).
In line with earlier suggestions, added half a tea spoon of olive brine and 10 ml or so of gin.

Thank you for your suggestion, John!
I had the advertised Vida Del Maguey mezcal, which is quite smokey. Felt I had to go closer to a mezcal 1 to Cynar 1.5+.
Loved your suggestion at that ratio.

Even more lime juice? Maybe it's because I live in Australia where fresh juicy limes are plentiful, but I found 5/6 oz lime was a little too sour/tart.