I'll sum this up pretty simply. Layonara blew through the roof on what the game can handle. I had the task to remove areas, lots of them. Unused interiors were pretty primary, as were massive area sets that nobody ever saw, but most of all things that leeched space... which I'll get to.
It's not being changed.
It was a hefty task to begin with, and figuring out what could be removed and what couldn't was a major issue in the balancing act of weighing several hundred player's individual interests and opinions, let alone staff interests and opinions.
What I am very confident of, is that the standard of what is included in the module has risen significantly.
now coming back to the concept of leeched space... something to think about. There have been more areas added then areas removed... and the module size was cleaned by 29 MB. Now look around and determine if you like what you're seeing.
That's the real trick in all of this, and while it's an ongoing process - things like this are not going to be put back in.