since I am testing and writing about 3D Printers for several online portals and magazines, I have various types of printers at home at any given moment. Since most of the printers are basically identical it would be nice to have a gcode-editor to adjust minimal changes just by hand instead to go thru the whole setup and slice process over and over again. Also since some Printers have special features like eg. color mixing it would be fabiolus to add the neccessary G-Codes directly instead of doing the detour thru an external editor.
Absolutly wonderfull it would be if the editor supports syntax highlighting and has a help function for the various codes you dont use very often.