While the letter itself is a little old at the moment, I'm going to be honest and say that I keep re-reading it amidst a mixture of disbelief and hope. I've been getting up on the same soapbox for almost three years regarding Final Fantasy XI's biggest problems, and Matsui's dispatch by and large seems to indicate that the team in charge of the game right now is aware of exactly these issues and actively wants to correct them.
This is kind of staggering. It's the good sort of staggering, but it's the sort of thing you don't expect to see, especially not from a game with a lot invested in gleefully ignoring the rest of the world. But this could mean that despite FFXI's age, next year could be the best one for the game in a long while.