It's arguably become much better in terms of "native" GUIs that don't try to hide the details. Between gitk and git-gui, what's really missing? (Both of those

It's arguably become much better in terms of "native" GUIs that don't try to hide the details. Between gitk and git-gui, what's really missing? (Both of those examples could probably be polished here and there, but the basic concepts are sound.) Also, you really don't have to know the intrinsic details of how Git is implemented. What you do need to know is its model. The "native" model of Git is already very clean and sound, tacking on an external model with subtle incompatibilities is precisely what will make life difficult.