The copy/cut/paste paradigm is ubiquitous, but I've always thought that a better model would be mark/duplicate/move. Where copy+paste is achievable by mark+dup

The copy/cut/paste paradigm is ubiquitous, but I've always thought that a better model would be mark/duplicate/move. Where copy+paste is achievable by mark+duplicate and cut+paste by mark+move. That way you don't have the danger of losing cut content if you forget to paste.