A command to erase (cancel) the last keyframe could be really, really usefull for every video maker.

I have a better idea, but I don't know if it could be done : A way to reach each keyframe, like a command "next/previous keyframe", that pause the game at the frame and the camera position where the keyframe is. That could be a huge help in video making. How many times I had to keyframe a replay twice or more from the start because one or more keyframes were missplaced.