Improve animation adding icon to launcher

[macho]

Feature request:

When you install a new application, a little animation follows in which the icon flies from the software centre window into the launcher. But it is a very basic and unbecoming animation. I think it could be improved by by making it less linear in one (or preferably several) of the following ways:

* varying the speed at which it moves
* varying the path through which it travels (e.g. spiral, erratic, etc.)
* varying the icon size (start huge and shrink down to size as it moves, or grow and then shrink)
* begin transparent and then become progressively more opaque as it moves

and so on ...