For most top schools, they will probably care more about course rigor than class rank. Also, if one try to use an easy schedule to boost GPA and class rank, it not only hurt the course rigor for college admission. You missed all the AP classes that you may potentially get credits and accelerate college graduation. In other words, it is a plain stupid idea.
@walkinghome UMich received >50,000 application each year, and yet they do recalculate GPA for each applicant.