But it WAS broken! Very slow, and sometimes limitations on number of users.
Do you really think Trystan, Sarah and co worked through the night just for Artistic Merit?
There are some strange people out there! 
They used to be called Luddites!

I think you're mixing up the problems with the back end, that people don't really see, so don't know is "broken", with a front end that most people thought was pretty much fine.
The back-end could have been replaced whilst still leaving the front end as-was (or at least very similar). Trystan and Sarah took the decision to revamp the front-end at the same time and that is fair enough. In the main the new design is fine, but having done similar things in the past, I know that no matter how much you look at things, the only time you really know what parts will be unpopular is when it goes live. Yes, these things that are being mentioned are small things, and in the main, people won't stop visiting completely because of them. But sometimes it's those small things that reduce the enjoyment to a degree and maybe cause some people to visit less, which would be a shame, as it's the community on here that make it such a wonderful site.
Obviously, you can't please all of the people all of the time. But a handful of (small) things are being mentioned by a number of posters. These probably wouldn't take too long to tweak and then most of the people would be happy most of the time.

PS - Am I just being lucky or have the "things we can't mention" gone away? I just have blank space where they were/should be. (Confused smiley)