Probably one of the reasons why we are supposed to always do dual-AP approaches as that provides single engine autoland capability and "auto-rudder" below a certain height (around 1500'AGL) in the 737. However, any competent pilot should be able to cope with an engine failure on final at least in the 737 and continue the approach, no reconfiguration necessary (if in F30), simply add a bit of power and rudder and your all set.