Designing a XForms dialog with fdesign was always a tedious task,
which is why there are new features with no GUI support (for example:
per-paragraph spacing). With the GUII, the situation is worse, as the GUI work
is needed to be repeated 3 times (or even more in the future).
So, I want to suggest a new approach for doing GUII dialogs:
The dialogs structure and logiv will be defined by in a simple text file,
and the dialogs will be built in run-time from these files.
An example for this approach can be seen in Kaptain
(http://www.hszk.bme.hu/~tz124/kaptain/) which is a "universal graphical
front-end for command line programs". See
http://www.hszk.bme.hu/~tz124/kaptain/docs/enscript.html
for an example.
In addition to easier maintenance, it will also add new abilities like the
ability to define new insets with text files, and the ability to load
various latex packages and set their parameters using a GUI dialog.