Adding total/cumulative time for set of videos in a subcategories like MCAT or other subjects/exams

Adding total/cumulative time for a set of videos in a subcategories of MCAT. For Example, If it showed Biomolecules category videos total to "x" amount of hours and the "DNA" subcategory videos total time is "y" hours or minutes. 

I have emailed them about this and they responded suggesting I would add it on here and if it gets enough upvotes, they will work on adding that feature to the MCAT and/or to all of the content. 

Please vote on here if this feature would also help you better plan how you will divide your time on studying and preparing for the MCAT (or other subjects and exams) and how much "time" you can set aside for "videos" on a specific topic or a subject. This would greatly benefit my MCAT study planning, hope this would help all or most of the other students studying for other subject and/or MCAT. 

Thank you!