Note, that this would even work, the question would be rather annoying, though :) The solution right now is to always start KWrite in a simple mode. Mostly only actions are hidden in the menus (@distributors: kdelibs/kate/data/katepartsimpleui.rc), but you can also change c++ code at Kate part level, as there are some functions:
- bool KateDocument::simpleMode() (kate part internal), and
- bool KTextEditor::Editor::simpleMode() (along with setSimpleMode())
PS: Tackat, we came up with this image before our phone call. That's why it was really funny when you said HTML is something that should not be removed. hehe... :)