yup, great idea
A Wikipedia-type Homepage for Chess.com needed!

Once again, the different language Wikipedias are separate websites with separate memberships and separate articles. You notice that under each heading there is a varying number of articles? The English Wikipedia claims 4.479 million articles, while the French Wikipedia claims only 1.4 million.

John, Chess.com doesn't have to copy Wikipedia 100%. Just the Homepage will do. It will make it easy for the people to familiarize themselves with the website and sign up. After that, chess.com will work just the way it works for those who change their language. If your language is English, you'll be able to sign in or sign up and use it just as you are using it now.
Of course those who would like to create their blogs and Forum posts in their language will be able to do so - just as they are doing now. So no problem here. This is someting that will be cooler and will help people.
As I've already mentioned before, people who have difficulties with English language are likely gonna have a hard time signing up and navigating the site. I know that they can later change their language, but I believe that it can be and should be done right at the home page - just like at Wikipedia. So a Wikipedia-type Homepage for Chess.com could help attract lots of non-Englishspeaking users. Imagine Chess.com look like this: