While it can be easy to follow a template, not every student comes in at the same level in math and other subjects. Both the less advanced and more advanced (relative to what the template assumes) students may find advising helpful to optimize course ordering to finish prerequisite sequences as soon as possible to graduate on time and allow for the greatest flexibility in upper level electives in major. Transfer students with their variations in courses taken at their prior colleges may also need assistance. Students who change majors could be in similar situations.
It is possible that some engineering students will be able to handle optimizing their schedule plans on their own (after all, engineering is about designing and optimizing things under constraints), but not every entering frosh has taken to that part of the engineering mindset yet.