Aperture: change image verson naming format?

Hi all!

I really like Aperture but there are some annoyances. One is that I don't like how Aperture names versions. If I create a new version of an image Aperture names it:

IMG_8791 - Version 2

I want to do a batch rename of these images to look like:

IMG_8791 (2)

In the future, I want Aperture to use the second format instead of the first one when naming new versions.

Any help will be appreciated!

Thanks & Enjoy life,
Steven