Game stats storage / display
I assume by artist you mean graphic or sound effect designers. The logic should independent from its visualisation. How data like altitude is stored or processed is no concern for the artist. To stay in Unity3D, you should create components (or complete prefabs) that render graphics or play sound effects. Having a enum for the dropdown is the preferred way as you mentioned. You map it to the corresponding names in the component for the artits. The component is easy to reuse. In your case extracting UILabel and 'TextBlock' is key. Consider those to styled by artists. You then create copies of the component for speed and coins or make it more generic for those cases.

tl;dr
Create components in Unity to separate logic and represantation (think or MVC controller and view) in components. Design view components artist friendly and controller components coder friendly.