How to set a custom zoom factor for "Preferences"-"Icon effects"-"Zoom"?

I'd like to achieve the flowing behaviour:

When I move mouse over an icon it is smoothly zoomed approximately by *2x* pushing neighbours aside.
When I move mouse out it is zoomed back to uniform icon size.
If I've clicked a launcher icon, it keeps zoom changing size according to mouse location and shows that application is being started by spotlight or jumping effect.

Is it possible? If yes, how can I achieve this?