Glowing red, the Negroni manages to be both sophisticated and simple at the same time and is definitely for a grown-up palate - for many it's simply too...
The intense bitter-sweetness of Campari induces the common experience of quasi existential love-hate in this drink. Hence the ad infinitum variations, as folk address their reactions thereto. My suggestion is simple: increase the gin to 45/1.5 and all else will become clear.
Other options, to keep the sweetness levels of the original ratio, are to swap a fraction of Campari with Aperol, or just build everything over cubed ice in a glass to accelerate dilution.
Replacing all of the Campari with Aperol does not, in my opinion, yield a Negroni. The result is incredibly tame with little bite.