User blog comment:Meighan/New Tools to Start & Grow Your Wiki/@comment-3080486-20110720101240/@comment-4713673-20110720165446

Yup, that's why we're not releasing the Wiki Progress Bar to existing wikis with over 250 edits, you guys will have most of the tasks done already! The progress bar is really aimed more at new wikis, to help them through the first steps of growing a wiki and it doesn't really make sense to put it on the wikis who are already past that stage.

Adding an easy way to get to wikia.css is definitely on the list for a new feature in the advanced tab!