Lighting Output

Is it just me or could the C6 use an upgrade in lighting? Has anyone upgraded the ballast to higher output one or is that just a pipe dream of mine. I’ve seen a few tutorial such as

http://www.audiforums.com/forum/audi-tt-7/diy-hid-upgrade-cheaper-replacement-dead-ballast-124571/

But I’m wondering if anyone has done it on our cars. Thanks!