How about modifying it so one can choose to use the 1,000, or 2000, 5000, or 10,000 most common words, for instance? Should be pretty easy and done dynamically

How about modifying it so one can choose to use the 1,000, or 2000, 5000, or 10,000 most common words, for instance? Should be pretty easy and done dynamically (although tuning the number _down_ would require more work).