I'm a little surprised how little I see regarding use of the video tool in RPG Maker.
It seems like allowing the player the option to activate a switch, or make a choice during a video, could open up a lot of options, such as quicktime events, or if a player choice window opens up, allowing the player to change how the video ends depending on their choice, etc.
Also - would it be possible for a plugin that allows the dev to place a video in the actual map - like a television is playing in the background of a scene. Or having a background parallax is a full motion video.
I am not a coder at all, and I have no idea how complex the things I suggested might be. I am guessing that video must be hard to work with in MV, as I don't see plugins which mess with videos come up very often.
I know there is a plugin to allow you to have a video as a background in your title screen, and there is a plugin which allows you to skip a video (which seems super helpful, so I am hoping to download that one later).