The value is that it's slightly easier to browse an alphabetical list than a random one (no, I don't have a citation for this).

But, yes, it would be nice to have the option to change the sort order, as well as the current filtering. One day, if it doesn't make the UI too complicated. I value simplicity.

if you know what you're looking for sure, but what if you're not looking for any specific site in particular, like the vast majority of people who visit?