I don’t know the process for reviewing, but this is normal procedure for E3D projects.
the one change you could make, is in your docs, create a separate directory for the models, and instruct users how to move the files to their models folder within e3d. the eliminates the missing files that need to be relinked. but it’s the only way I know how. and I purchase e3d projects all the time and almost always use the relink method.
Are you sure it’s not something else? because like I said, most E3D projects here use the relink method. Some authors instruct moving the models but not normally
by the way, to Envato, I for one PREFER relinking the models, because I don’t like clogging up my default directory with extra models. relinking them keeps it much cleaner. Just my view