My 5 cents, but I don't really like the A, B, A-, etc. Focus on what you know and what you like.. and if you want to show your grades, just join them on another paper.
The video is a bit long. You want to say in a nice way: People offer job and trade karma. People accept job and get karma. I don't need to watch a 2min video with login, logout, login, logout, login, logout to understand that. Otherwise, I like the idea.