Fit text to frame
This is a very important feature for anyone doing desktop publishing and has to fit different variations of text into a predefined text frame size.
Even when doing hobby projects like bullet journal templates, not being able to do this natively (aka without scripts or 3rd party) is frustrating
An object style or paragraph style option to do this would help greatly. 3rd party plugins exist that automatically shrink text to fit within a frame, but it would be nice to have it built into the styles.
I can't believe this isn't a thing, and more people aren't requesting it! Especially useful for newspaper style layouts where you're fitting the headline to the available space.