I wouldn't chane the btc logo.
Rest is better than the original bitcoin.org website.
Changing the logo might be a good legal move. I know that when the Liberty Dollars went down the fact that they used the USD symbol was used against them in court. Using anything resembling the USD symbol might be used as evidence against BTC traders, and the current BTC symbol looks like a USD symbol made with a B instead of an S. I mean, I"m not a lawyer or anything, but from what I read anything that makes it look like you are trying to pass something off as legal tender is a bad thing legally. You can barter with anything, but 'legal tender' is a complicated concept legally. That might be something to ask a real lawyer about.