Suppress everything "On this computer" and use only sync'd content

[tarverator]

I don't want anything substantive in my Tasks that is not synced to Todoist. Could you please provide a "Todoist Only / Nothing Local" mode?

I would appreciate a global switch that assures that I don't accidentally start relying on a local feature that disappears when I access my task list through a different interface, such as Todoist on Windows or Android.

The Pinboard is purely local, invisible from Todoist. I don't want to see the option for "pinning" any task.
The local Inbox is not the Todoist Inbox, which for me is my "real" inbox. I don't want to accidentally drop anything in there and forget it. The Todoist Inbox cannot be renamed. Can the local one be disabled?
I don't want any labels that aren't sync'd. The "On This Computer" heading in the Labels view just wastes 4 lines of space at the top of the screen.

There may be others, I would like to be sure.