That's fascinating! I have ofttimes felt the urge to learn a good video editing workflow as a hobby (though haven't as of yet gotten around to it), and I'd never have known of this heaven-and-hell difference without experiencing the pain first hand. I know these tools tend to overlap with DAWs, but do you know about this automation/productivity landscape on the side of audio production and editing?
Video editing features are all quantised to one frame – that's why Avid shows that frame as a range, not a point. Audio editing tends to be continuous rather than discreet, so it's a different UI strategy. There's no "end of word" to speak of, there's "end of beat", and I can't really tell you about that. I will tell you that I couldn't find any DJ tool which matches Avid's semantic level. One that comes very close is the Serato Itch, along with the Novation Twitch controller - overloaded semantics on every command, sharp mode separation, at no compromise over control.
