User blog comment:Rupert Giles/Global Navigation Update/@comment-1009971-20141204132515/@comment-1038387-20141204133650

The problem with the "so much negative feedback" is... it's not a representative sample, as people who like it are less likely to write about it. There are millions of users (and even more accounts), even if you started a petition, you wouldn't even get to one percent of users. The majority of Wikians is reader/lurker. Also, the majority of comments isn't constructive, and we know from the beta last month that they haven't addressed any the points we raised to satisfaction.

As for your opt-out: this is a test period. They're testing the performance site-wide, to see which version of the new one they'll use in the future. Chances are slim we're going to get to keep the old one.