My biggest stumbling block with the original D:OS editor was the lack of a ready-made player character creator. When I realized that I had to reverse-engineer the one in the main game and to adapt it for the (small) campaign I had in mind, my brain shut down and I never mustered up the willpower to continue working on it. Maybe I have missed something, but I haven't found any tutorials on this back in the day, either...

It would be great if, instead of making an entire level with custom GUI elements floating in the air, we could just say: this module needs 1 (2, 3, 4...) player character(s) of level 1 (2, 3, 4...), with following races, "class" and equipment templates, and appearance options available to select from. If we could then use this character creator in the editor to generate a bunch of legitimate PCs and swap them out during testing, it would be great.