Formulating powdered lemonade

Hi, guys. I've been working on this for a few months, experimenting and adjusting amounts based on taste, and I'm really close to creating a powdered lemonade blend that tastes like commercial brands like Crystal Light or True Lemon.

But I'm missing something tangible, or adding too much of something else. Any ideas on what I might add or adjust here? Amounts are in grams:

Pink sea salt .100

Acacia gum .500

Citric acid .900

Malic acid .100

Beta cyclodextrin .200

Black pepper extract .020

Ace k .022

Erythritol .499

Allulose 3.150

Neotame .0037

Lemonade WONF .500

Bitter blocker 1 .300

Bitter blocker 2 .300

Mouthfeel product .300

The PH is just under 3.

Thanks!

EDIT: Or maybe I'm overcomplicating things? I'm aiming for a richness and depth to flavor, hence the salt and pepper.