Variable Pre text Only if variable has A value

My idea is:
Similar to how Fallback Text works here we should be able to add text to the beginning of the variable (i.e. with a | separator and these text will only show if the variable has a value

I think these groups of people would benefit from this idea:
Companies trying to personalize their emails

Why I think they would benefit from this idea:
They can add specific text that will only show on the condition that a certain variable is present
Any code or resources to support this idea: