Assuming absolute immunity for official acts paves the way for tearing up all the sensible laws in one hit and torpedoing any bits of the legislature they don't like? Executive orders no longer bound by the constitution, etc...
Executive order to extend the current term by a year? And hope the combination of all the drugs and age kills off the Orange one. Edit - two years would probably actually do this.
Assuming absolute immunity for official acts paves the way for tearing up all the sensible laws in one hit and torpedoing any bits of the legislature they don't like? Executive orders no longer bound by the constitution, etc...