Blizzard's internal tools need an upgrade

Susana of Hyjal speculates about something I've thought about a few times before -- just what exactly are Blizzard's internal development tools like? Most games that have mapmakers can churn out new maps pretty rapidly, but we've had the same BG maps for years now, and only one or two per year since then. And even the created maps aren't fixed easily, apparently -- a few map tweaks on WSG would probably fix the turtling problem, but Blizzard instead is tweaking the rules to fix things. Just what is Blizzard using to make their game that they take so long with development?

To be fair, the rules here are a little more complicated than most first-person shooters (since you can do a lot more than just shoot at each other), so obviously the maps would presumably be a little more complicated as well. But in the age when players have access to the Neverwinter Nights toolset and even the Forge on Halo 3, surely it's a little crazy that Blizzard takes months to release one map, when other great games can pump out whole packs of them in the same time.

Now, this is WoW Insider, so it's ok if you're a Blizzard apologist. It's fine for you to say "Blizzard has the biggest game in the world not despite the fact that they're so slow, but because of it," and it's fine for you to be a fanboy/girl and say you'd rather wait three years for a Blizzard-quality Arathi Basin than play a whole "Hidden Fronts" pack. And the truth is that when Blizzard does release content, they don't disappoint. But we're still left wondering just why, after doing this for so long and having so much practice at it, it still takes them so long to do it.