1. No, I need to know where the mouse is on the screen.
2. No, what if I make “forever center mouse”?
3. You mean <mouse touching color | |?>, yes, but I don't understand the rest.
4. No, there's an extremely easy workaround.

when gf clicked
forever
  go to [mouse-pointer v]
end

1. Only if there is an object following it too.
2. Abusable.
3. No. 1.
4. What Pro said.

1)-1 What's the point?
2)-1 That could cause trouble.
3)-1 Easy workaround.
4)-1 Easy workaround.