Cool idea, but missing the points
There are two main points I think the author ignores:
1. The gnome-volume-properties capplet was *always* intended as a "placeholder" to simply prove that HAL/D-BUS/udev are actually functional. What's being nitpicked by an alarming number of people as an example of bad UI design is actually a result of *no UI design whatsoever* by a kernel-level hacker using Glade for the first time in his life to let fellow hackers appreciate his (fantastic) kernel-level work. Nobody treats that dialog as a finished product.
2. Running apps from the command-line is a distinctly "hacker" thing to do. In other words, the author's proposal of a system to GUI-fy the command-line is useful to nobody. The GNOME system's target audience *never* uses the Run dialog. And the kind of person who *would* know how to use the command-line and would find it much more efficient to run "app-name --help" than to go through a GUI. So this GUI-fied command-line system has no audience -- only people who start a couple of programs with it, say, "ooh, this is cool" and then turn happily back to the faster, more efficient -- and, let's face it, easier -- console.
Let's say I want to use the Run dialog to issue an "xset" command. "xset --help" is 58 lines long. Those 58 lines sometimes have multiple options *alongside* one another to save space. And that's not even a particularly complex application; imagine a dialog which exposes all the options in mplayer or xine!
Both of these problems have been solved in a better way than using a command-line system. I don't need to use xset directly because Applications -> Desktop Preferences -> Screen Resolution handles it for me. And I don't need to invoke a media player manually; all I do is double-click on the file I want to play.
GNOME is a document-based system: instead of focusing on applications, it focuses on documents. The GNOME 2.8 mime-type system makes this document-centering even more pronounced and useful.
Re: lol ?
> LGPL, ok, but looks ugly
Looks ugly? You must be thinking of GTK1. GTK2 looks beautiful, check some screenshots on http://art.gnome.org. There are themes easily nicer than Keramic (depending on how much you like Keramic of course).
> And gtk is only a raw toolkit, not a
Yes, the author might have wanted to mention GNOME. On the other hand, GNOME certainly isn't cross-platform.
> And then u call this RAD ?
> A gui designer doesnt count for me as
> the only thing u need for RAD.
Check out Anjuta at http://anjuta.sourceforge.net.