Universities use LaTex PDF in researches for a good reason. The PDF produced by a LaTex app won't resample or blow-up the embedded images (JPEG). As a researcher, it will save us a lot of time if illustrator PDF setting has the option to not resample or alter the embedded images. A JPEG image (1920 x 1920 pixels) of a size 200 KB will make illustrator PDF file of about 10 MB. Whereas the PDF file produced by a LaTex app will be slightly bigger than 200 KB. I hope Adobe engineers will consider this issue.