Interesting! There are a few tools out there that allow you to do this already, such as
Gplus.name | Google + Link Shorter | SEO Friendly Link Generator.
HOWEVER, before you rush in to the above link and change your name there have been some discussions as to whether using the likes of the above link actually strip your G + 'link juice' (hate the word, but not many better to describe) by 302ing your profile. Here is a decent article about this to help you decide if its worth the risk:
Is Google+ URL Shortener gplus.to Keeping Your Link Juice? | Cirrus ABS
What do you think?
