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.
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.