Crazy helpful video. I'm a student of Marissa as well hovering around 1600 MR, everytime you drop something like this I feel the improvement. I would be interested in hearing how you discover the strings where it pays to mash like you mentioned with Jamie and Luke.
Strider showed a training mode tutorial where he uses a setup with 3 different options: DR, 2MK and jump ins which helps getting used to different ranges of action