Edgewood

Good balance; of the 3 ingredients you'd expect to be able to taste, you can taste them all equally.  But could use another layer of flavor: herbal or fizzy, maybe?

I feel like gin is the wrong alcohol for this. Also agree with another commenter that it lacks another layer or more depth. For a second drink, I swapped cachaca and added some bitters, and felt that was an improvement.

Kind of bland, low proof, modest alcohol content, dry. Better as it warms. Maybe 2.5 out of 5...but not a 3. The grapefruit juice adds some citrus acidity to the mild bitterness of the Punt e Mes and drier bitter of the Lillet. I am not sure what might improve it, but I might try 1/2 oz of Pamplemousse liqueur in place of the grapefruit juice, or go to 1/2 oz grapefruit juice. If sticking with Plymouth, the Navy Strength would at least give it some alcohol heat.