I do a very similar version, minus the pepperoncini. One thing that I've found can really take it up a notch is to add just a touch of soy/worcestershire sauce,

I do a very similar version, minus the pepperoncini. One thing that I've found can really take it up a notch is to add just a touch of soy/worcestershire sauce, maybe about 1/4 to 1/2 teaspoon of each. IMO it adds a nice savory background flavor.