Just talking about being able to grab an icon and position it anywhere I want on the screen (possibly snapped to a grid).
Right now, icons have to be aligned in rows anchored in the top left corner, so that whenever you insert a new one, all the ones after that get pushed right or down, messing up your entire layout.
We've had this ability on desktops since Windows 3 thirty years ago, and Android has had it since day one. As does macOS. Why not iOS?
Here is a thread on reddit describing it:
https://www.reddit.com/r/ios/comments/r2vs1x/why_cant_you_pu...
There are a few solutions around it, some require a jailbroken iPhone, others use empty widgets to create "fake space".
Do you have a screen shot that could illustrate what it is you want to be able to do?
They're not all stacked up starting at the left corner, are they?
Imagine that all I want is three icons on my home screen, all lined up on the right edge of the screen, where they are easy to reach by my thumb.
You can't do that on iOS.
But now that you finally gave a concrete example of what you want to do, I can at least picture it.