Since it can mark a range of frames, there was a good suggestion made by @rondi7 that I would like to echo. And that’s about adding the function of being able to create chapters and being able to export that information. The matroska container can hold chapter info which is also used on DVDs and Blurays. Even if people are not going to use them for DVDs and Blurays, chapter information would be very useful and handy for people. It’d be nice to somehow be able to set the ranges on the timeline to create chapter stops then exporting that along with the matroska file. Can that be added?
There is also a small suggestion I wanted to bring up. In some other video editors, when you manually place the playhead on a marker or seek to a marker or even just go frame by frame to a marker, on the upper left hand corner a small transparent box will appear on the player screen with info on that marker. Like this. As soon as you move at least one frame away from the marker then that box goes away from the player. Can something like that be added?