[_d7dt]

What you've said is really not correct, at all. For one, Glade is not deprecated in the sense that it doesn't work any more, it still works okay with GTK3, however it has a number of limitations that may make it difficult to use (which it always had, nothing has changed here). Two, a replacement is being worked on, I'm really not sure what your criticism is besides "go faster" which, I'm sure we all wish we could write code faster and have it work perfectly and do everything the first time, but that's not realistic.

Edit: Just to be clear here, in my opinion the new tools will likely end up being a large improvement on Glade. Glade is a pretty old application that by design does a number of weird things that don't match current best practices, you can see some of them if you read the blog post that was posted above.