How might I be able to prevent a Cell form being deleted when you press the Delete key?
Maybe there is a way to display some type of Dialog when you attempt to delete(or cut) a cell?
The option is Deletable:
Deletable is an option for Cell which specifies whether the cell can be deleted interactively using the front end.
You can set it either programmatically as shown in the documentation linked above, or with the Option Inspector (Shift+Ctrl+O on Windows).

Delete the cell, and not necessarily prevent it entirely. I see tried and DeleteWithWarning but it didn't seem to work, might you have any other ideas? $\endgroup$