Does anyone know a way to either disable Design View or set HTML Code View as default view when I click Edit on a Topic/Snippet/Master Page/etc? Design View is annoying, it likes to modify HTML and inject redundant inline-style or no logical reason.
Click the Tools > Options menu item. From there select File Assocations. In there select the HTML View option and click the Set as Default button. You'll also need to ensure that the Use Default Editor option is selected.