mouse to move the cursor?

This might sound outright heretical and it probably is, still ... would 
it be possible to be able to use the mouse to position the cursor within 
a command line?  Since most everything is now mouse-capable, out of 
habit I often find myself clicking on a recalled zsh command line to 
position the cursor. Of course it doesn't work, but *could* it work?  
I'd expect it to be viewed as a silly luxury even if it was doable, but 
I'll mention the idea anyway.  If that kind of thinking was acceptable 
one might even contemplate various other mousey things, like maybe the 
scroll wheel activating command recall or being able to dedicate left 
and right clicks to assigned widgets or commands ... could get interesting.