Basically with the editor, yes it can be confusing but once it is used a bit it will allow modders to change way more options. I played around with it for a little bit and I found that creating lights(yes you can do it) and changing things on vehicles is much easier and a hell of a lot faster. Plus for the lights there is even a little option to change the color by using a color palete instead of messing with values.
Is it the same light editing mechanism from Emergency 4 Editor ? You know, edit the speed, offset flash, can you copy and paste coronas, make custom flash patterns like i can with the RCMP modification etc ?