The idea of having the ability to not only view but alter someone's mind is such a brilliant plot device it just blows my mind that its never been used more often in the mainline series. Besides the off mention in Transformers Prime, the only time its been in spotlight was in the IDW comics of Lost Light. The series did a good job of explaining what it is and giving us both good and bad examples of Mnemosurgeons. Not to mention it also explored how it can be used for good and twisted evil. The morality of the profession alone is worthy of praise. Despite your intentions is it even your right to dive into the minds of individuals even with formal consent? What do you do if you operate on someone and discover something you weren't suppose to see? Do you retain the information or do you make a report? Or even better do you use the information for your own sinister gain? I can understand some series not using the concept "although IMAGINE a mnemosurgeon in Rescue Bots" but I think we can definitely use more plot devices that involve this profession.