We did. I built a parser for the header weights and what not. It was a fun project and I thought the results were really slick. It was also easily overridden b

We did. I built a parser for the header weights and what not. It was a fun project and I thought the results were really slick. It was also easily overridden by a very large language picker in our footer. This override choice is remembered in a long lived cookie. People complained. They didn't understand why they were getting whatever language and the picker was apparently too hard to find. Now we just default everyone to English. They're still free to use the language picker. No one complains.