What I would like to see is a feature similar to the pencil feature of 
Flash MX. What happens is you draw a curve or a line free hand with all 
the imperfections, and then the line is corrected to a smoother version. 
Effectively, all the imperfections are removed from your drawings.  
 
Technically speaking, for the GIMP the feature would require a least 
squares approximation or similar to evaluate the best curve for the job, 
and then save that as a path. In Flash the amount of allowable detail is 
determined by the zoom on the image. Its a highly useful tool because you 
can zoom out a little and do a very quick circle, which is a perfect 
circle once you zoom back in. Flash uses several modes, one which is more 
likely to give your free hand drawing straight lines, one which is more 
likely to give curved lines and another which doesn't modify your free 
hand drawing.  
 
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_oO|Richard-Sheffield-UK|Oo_