Okay, simple and minor change, just requesting a changelog to be included with the actual downloads, whether it be Desura, Dropbox, or Steam. Or wherever else may be added.
Why? Two reasons: Manual validation of version, by checking the offline changelog you get confirmation on the version you have for certain. I just did a full download, and Desura told me I was downloading 1.8.3.1: Does that mean 1.8.3 hotfix 1 or is that just an odd bit of nomenclature? (It doesn't matter in this case because there's hotfix 2 out which includes hotfix 1, but that's specific to this scenario.) Also, it helps get the patch notes to those who have unstable internet connections, or even those who just download off of Desura (+future Steam) but don't hang around the forums. Also also the forums have been known to be unstable, I've gotten quite a few error 500s trying to open threads.
Probably also include a "changelog" button in the launcher that'd open the log.
EDIT: I just noticed the version info in the launcher, so you don't need it for manual version checking. But still for getting change data without heading to the forums it'd be nice.