Anyone wish they could change their @gmail.com username?

I wish I could change mine to something more professional but it seems like every possible combination is taken.

And it's so hard to start over when I have built so much on my current @gmail.com.

I have the Legacy data pricing and $7.99 Google Music to name a few but my username sucks.

I feel like I can't get it out to anyone cause it's lame and childish.

Would Google ever release a new domain for mail? Like Microsoft, Yahoo!, & Apple have?