IMHO this editor ony will be a improvement to those that are used to something like GEdit, Notepad++, TextMate, Adobe text-editors and Github's devs. I don't think that there much here for ones that use LightTable, VIM, Emacs or some fancy IDE for their everyday job.
For Go dev, I used gedit for a while before finding LiteIDE- Granted it was gedit with my own scripts hotkeyed (which it support doing) and a few plugins, but it was surprisingly featureful- and lightening fast... I could commit, build, run unit tests, had syntax highlighting and auto-complete... And it was fast... So I think you are underrating some of the above editors.
