The current system is not perfect, but it works and everybody uses it! In fact, that's what I learned in school and I wouldn't want anybody telling me that I'm wrong because I feel that using arbitrarily the term "kilo" for something else than 10^3 is great! It's like those units: miles, gallons and inches! Everybody uses that ! Converting to the so-called "Metric System" would be such a waste, 'cause that's not what we learned in school... No country would be as dumb as to take such a decision... Oh wait, they all did except for Burma, Liberia, and the United States... damn French people...

Caps lock, IMO, is the perfect replacement for ESC for fast vi action! Why should my fingers go as far as the ESC key or do a weird creative motion to try to hit the ctrl key when Caps lock is the biggest, closest-to-hands, most useless key around!