It is to be noted that Change Management application workflows consume the Status values. Also there are status transition rules configured in the backend (system) forms which also based upon the Status values. I am not seeing any feasible approach for this req,
The best way to do that and the only safe solution is by creating a new selection field contain the Status values you want and map it to the original (OOTB) Status field after you made as a hidden field.
It's minor customization but solve major issue.