Forgot to mention the biggest benefit is that the function would first execute any code immediately at the .updateStop call and ''then'' the object/entity/scene would stop it's update passes until a .updateStart() function is called to 'restart' the update passes...
Then something like having a flag set for whether or not the onFirstUpdate should get called 'again' on a .updateStart() call... something like .callFistUpdateOnUpdateStart = true/false ...... or something xD

