Currently there's a whole slew of sub-commands to 'stop', including 'stop w' to stop walking (how come no 'stop a' to stop attacking?), but...
I would love to see 'stop' useable to simply stop all automated actions your character is doing, sort of a hard breaker to completely return manual control, or a way for newer players like myself to not spend thirty seconds trying to remember how to stop fighting (was it 'stop fight'? No..."Stop attack'? nope...uhm...'stop fighting'? nope....) in the middle of the spam inherent in automated fights.