I’m pretty sure Cogmind is the first ASCII roguelike to support a drag-and-drop mouse interface.
Usage of drag-and-drop is not required, but it is slick, and will help non-hardcore players get into the game by enabling an intuitive feature common to modern interfaces.
For mouse users, the original part manipulation controls (Ctrl/Shift-clicks) are still available (they’re faster than drag-and-drop), but drag-and-drop does make it possible to arrange the order of parts in your list, a special feature previously only accessible via keyboard.
Cogmind is still (and always will be) entirely playable without even touching the mouse, which is the most efficient way to play, but every command is also mouse-accessible, meaning mouse-only play and hybrid styles (probably the most common) are all possible.
Next: See a sneak peek of the intro.
Edit 160728: See a newer recording of the drag-drop UI and lots of other features to help ease new players into the game in this more recent post.