Allow for dropdowns or fixed options in data function flyout

When configuring or registering a data function, I'd like to be able to enforce fixed choices for those input parameters. When running the function in a dashboard with document properties you are able to set options, however when you are running from the data function flyout you have to type every input parameter.

I've attached two images. One where I triggered the function directly from the function flyout. and another one where I've made a dashboard with document properties and user inputs built in.

It's very straightforward to build this within a dashboard with fixed values and pass that through a function when it's properly configured. However I'd like to be able to do that for a function flyout that is used across my organization without someone having to enter a specific dashboard.