Save Wizard saves all the DRO and LED values in the user space, whether they have been defined on a screen or not. They are saved into a file with the same name as your wizard but with .def for type. Every time your wizard is started up it will read the .def file to take all initial values.
The system DROs are not saved in the wizard set.
Its not a problem for duplication of numbers between wizards, since we can only run one wizard at a time. But duplication between macros and macropumps can be an issue We have had a couple strange bugs reported by guys that have a macropump running and then startup the Newfangled Wizards. It would have been nice if someone had set a standard back in the early days, like wizards start at 1000 and go up and macropumps start at 1255 and go down, but it has not happened, and its always a risk.
Global functions and buttons are not possible. I just had dinner with Brian tonight and bugged him again to do this, but its a big change in the way VB is integrated into Mach and its not likely to happen. He agrees it would have been a better way, but its to late to go back. One of the main features of Flash in my view is a more integrated programming environment.