hello I found out which .reg key it isSure, check the Settings page for some, like search box, cortana and task view button.
Those that are not listed, are removable, but that is then removing the component as well, read the warning on the components page on first visit.
Let me know if I misunderstood the question.
Sure is one of the features on the top of the list.Do you consider implementing this ability to add start and taskbar layout mods xml in the future version?
It would be nice to have it from within the gui.